18968672032 has 24 divisors (see below), whose sum is σ = 37357117056. Its totient is φ = 9481150272.

The previous prime is 18968672003. The next prime is 18968672053. The reversal of 18968672032 is 23027686981.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308 + ... + 194779.

It is an arithmetic number, because the mean of its divisors is an integer number (1556546544).

Almost surely, 2^18968672032 is an apocalyptic number.

It is an amenable number.

18968672032 is a deficient number, since it is larger than the sum of its proper divisors (18388445024).

18968672032 is a wasteful number, since it uses less digits than its factorization.

18968672032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199120 (or 199112 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 18968672032 in words is "eighteen billion, nine hundred sixty-eight million, six hundred seventy-two thousand, thirty-two".