18051910956 has 72 divisors (see below), whose sum is σ = 45862715808. Its totient is φ = 5986848000.

The previous prime is 18051910931. The next prime is 18051911021. The reversal of 18051910956 is 65901915081.

18051910956 is a `hidden beast` number, since 1 + 80 + 519 + 1 + 0 + 9 + 56 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11946241 + ... + 11947751.

It is an arithmetic number, because the mean of its divisors is an integer number (636982164).

Almost surely, 2^18051910956 is an apocalyptic number.

It is an amenable number.

18051910956 is an abundant number, since it is smaller than the sum of its proper divisors (27810804852).

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

18051910956 is a wasteful number, since it uses less digits than its factorization.

18051910956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 45.

The spelling of 18051910956 in words is "eighteen billion, fifty-one million, nine hundred ten thousand, nine hundred fifty-six".