1165595040 has 144 divisors (see below), whose sum is σ = 4106059776. Its totient is φ = 300787200.

The previous prime is 1165595029. The next prime is 1165595051. The reversal of 1165595040 is 405955611.

1165595040 is a `hidden beast` number, since 1 + 1 + 65 + 595 + 0 + 4 + 0 = 666.

1165595040 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1165595029) and next prime (1165595051).

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×1165595040² = 2717223594545203200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1165594986 and 1165595004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31585 + ... + 57695.

It is an arithmetic number, because the mean of its divisors is an integer number (28514304).

Almost surely, 2^1165595040 is an apocalyptic number.

1165595040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165595040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2053029888).

1165595040 is an abundant number, since it is smaller than the sum of its proper divisors (2940464736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1165595040 is a wasteful number, since it uses less digits than its factorization.

1165595040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26163 (or 26152 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The square root of 1165595040 is about 34140.8119411358. The cubic root of 1165595040 is about 1052.4041780428.

The spelling of 1165595040 in words is "one billion, one hundred sixty-five million, five hundred ninety-five thousand, forty".