1080980640 has 144 divisors (see below), whose sum is σ = 3825607968. Its totient is φ = 288251136.

The previous prime is 1080980617. The next prime is 1080980647. The reversal of 1080980640 is 460890801.

It is a happy number.

1080980640 is a `hidden beast` number, since 1 + 0 + 8 + 0 + 9 + 8 + 0 + 640 = 666.

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

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 = 1080980595 and 1080980604.

It is not an unprimeable number, because it can be changed into a prime (1080980647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24979 + ... + 52781.

It is an arithmetic number, because the mean of its divisors is an integer number (26566722).

Almost surely, 2^1080980640 is an apocalyptic number.

1080980640 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 1080980640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1912803984).

1080980640 is an abundant number, since it is smaller than the sum of its proper divisors (2744627328).

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

1080980640 is an equidigital number, since it uses as much as digits as its factorization.

1080980640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27833 (or 27813 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1080980640 is about 32878.2700274817. The cubic root of 1080980640 is about 1026.2960056977.

The spelling of 1080980640 in words is "one billion, eighty million, nine hundred eighty thousand, six hundred forty".