1165260030 has 128 divisors (see below), whose sum is σ = 3139637760. Its totient is φ = 274391040.

The previous prime is 1165260029. The next prime is 1165260043. The reversal of 1165260030 is 300625611.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1888282 + ... + 1888898.

It is an arithmetic number, because the mean of its divisors is an integer number (24528420).

Almost surely, 2^1165260030 is an apocalyptic number.

1165260030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165260030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1569818880).

1165260030 is an abundant number, since it is smaller than the sum of its proper divisors (1974377730).

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

1165260030 is a wasteful number, since it uses less digits than its factorization.

1165260030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1165260030 is about 34135.9052904709. The cubic root of 1165260030 is about 1052.3033426484.

Adding to 1165260030 its reverse (300625611), we get a palindrome (1465885641).

It can be divided in two parts, 116 and 5260030, that added together give a triangular number (5260146 = T₃₂₄₃).

The spelling of 1165260030 in words is "one billion, one hundred sixty-five million, two hundred sixty thousand, thirty".