18764013864 has 32 divisors (see below), whose sum is σ = 46936189440. Its totient is φ = 6251184000.

The previous prime is 18764013859. The next prime is 18764013881. The reversal of 18764013864 is 46831046781.

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, 173832 + ... + 260279.

It is an arithmetic number, because the mean of its divisors is an integer number (1466755920).

Almost surely, 2^18764013864 is an apocalyptic number.

It is an amenable number.

18764013864 is an abundant number, since it is smaller than the sum of its proper divisors (28172175576).

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

18764013864 is a wasteful number, since it uses less digits than its factorization.

18764013864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435921 (or 435917 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 18764013864 in words is "eighteen billion, seven hundred sixty-four million, thirteen thousand, eight hundred sixty-four".