18833640264 has 64 divisors (see below), whose sum is σ = 55393070400. Its totient is φ = 5908591872.

The previous prime is 18833640233. The next prime is 18833640271. The reversal of 18833640264 is 46204633881.

18833640264 is a `hidden beast` number, since 18 + 8 + 336 + 40 + 264 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2560822 + ... + 2568165.

It is an arithmetic number, because the mean of its divisors is an integer number (865516725).

Almost surely, 2^18833640264 is an apocalyptic number.

It is an amenable number.

18833640264 is an abundant number, since it is smaller than the sum of its proper divisors (36559430136).

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

18833640264 is a wasteful number, since it uses less digits than its factorization.

18833640264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129019 (or 5129009 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 45.

The spelling of 18833640264 in words is "eighteen billion, eight hundred thirty-three million, six hundred forty thousand, two hundred sixty-four".