18239025956 has 48 divisors (see below), whose sum is σ = 33553293312. Its totient is φ = 8664084000.

The previous prime is 18239025953. The next prime is 18239025971. The reversal of 18239025956 is 65952093281.

It is not an unprimeable number, because it can be changed into a prime (18239025953) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2546981 + ... + 2554131.

It is an arithmetic number, because the mean of its divisors is an integer number (699026944).

Almost surely, 2^18239025956 is an apocalyptic number.

It is an amenable number.

18239025956 is a deficient number, since it is larger than the sum of its proper divisors (15314267356).

18239025956 is a wasteful number, since it uses less digits than its factorization.

18239025956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560 (or 7558 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 18239025956 in words is "eighteen billion, two hundred thirty-nine million, twenty-five thousand, nine hundred fifty-six".