3109642656 has 24 divisors (see below), whose sum is σ = 8162812224. Its totient is φ = 1036547520.

The previous prime is 3109642651. The next prime is 3109642687. The reversal of 3109642656 is 6562469013.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (3109642651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16195960 + ... + 16196151.

It is an arithmetic number, because the mean of its divisors is an integer number (340117176).

Almost surely, 2^3109642656 is an apocalyptic number.

It is an amenable number.

3109642656 is an abundant number, since it is smaller than the sum of its proper divisors (5053169568).

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

3109642656 is a wasteful number, since it uses less digits than its factorization.

3109642656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32392124 (or 32392116 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The square root of 3109642656 is about 55764.1700018928. The cubic root of 3109642656 is about 1459.6099940328.

The spelling of 3109642656 in words is "three billion, one hundred nine million, six hundred forty-two thousand, six hundred fifty-six".