18336884994 has 24 divisors (see below), whose sum is σ = 39739360752. Its totient is φ = 6110842200.

The previous prime is 18336884959. The next prime is 18336885013. The reversal of 18336884994 is 49948863381.

18336884994 is a `hidden beast` number, since 1 + 83 + 3 + 68 + 8 + 499 + 4 = 666.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41832 + ... + 196019.

It is an arithmetic number, because the mean of its divisors is an integer number (1655806698).

Almost surely, 2^18336884994 is an apocalyptic number.

18336884994 is an abundant number, since it is smaller than the sum of its proper divisors (21402475758).

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

18336884994 is a wasteful number, since it uses less digits than its factorization.

18336884994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242142 (or 242139 counting only the distinct ones).

The product of its digits is 35831808, while the sum is 63.

The spelling of 18336884994 in words is "eighteen billion, three hundred thirty-six million, eight hundred eighty-four thousand, nine hundred ninety-four".