18382637668 has 24 divisors (see below), whose sum is σ = 33876279360. Its totient is φ = 8711033760.

The previous prime is 18382637639. The next prime is 18382637671. The reversal of 18382637668 is 86673628381.

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, 906538 + ... + 926593.

It is an arithmetic number, because the mean of its divisors is an integer number (1411511640).

Almost surely, 2^18382637668 is an apocalyptic number.

It is an amenable number.

18382637668 is a deficient number, since it is larger than the sum of its proper divisors (15493641692).

18382637668 is a wasteful number, since it uses less digits than its factorization.

18382637668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833267 (or 1833265 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 58.

The spelling of 18382637668 in words is "eighteen billion, three hundred eighty-two million, six hundred thirty-seven thousand, six hundred sixty-eight".