18320285264 has 20 divisors (see below), whose sum is σ = 36640571520. Its totient is φ = 8864653920.

The previous prime is 18320285219. The next prime is 18320285273. The reversal of 18320285264 is 46258202381.

18320285264 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18467534 + ... + 18468525.

It is an arithmetic number, because the mean of its divisors is an integer number (1832028576).

Almost surely, 2^18320285264 is an apocalyptic number.

It is an amenable number.

18320285264 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18320285264 is a wasteful number, since it uses less digits than its factorization.

18320285264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36936098 (or 36936092 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The spelling of 18320285264 in words is "eighteen billion, three hundred twenty million, two hundred eighty-five thousand, two hundred sixty-four".