18712964 has 24 divisors (see below), whose sum is σ = 34003200. Its totient is φ = 9001440.

The previous prime is 18712943. The next prime is 18713027. The reversal of 18712964 is 46921781.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28067 + ... + 28725.

It is an arithmetic number, because the mean of its divisors is an integer number (1416800).

Almost surely, 2^18712964 is an apocalyptic number.

It is an amenable number.

18712964 is a deficient number, since it is larger than the sum of its proper divisors (15290236).

18712964 is a wasteful number, since it uses less digits than its factorization.

18712964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 921 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 18712964 is about 4325.8483561031. The cubic root of 18712964 is about 265.4896086764.

The spelling of 18712964 in words is "eighteen million, seven hundred twelve thousand, nine hundred sixty-four".