18313747504 has 20 divisors (see below), whose sum is σ = 38212338976. Its totient is φ = 8452498752.

The previous prime is 18313747453. The next prime is 18313747561. The reversal of 18313747504 is 40574731381.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44023224 + ... + 44023639.

Almost surely, 2^18313747504 is an apocalyptic number.

It is an amenable number.

18313747504 is an abundant number, since it is smaller than the sum of its proper divisors (19898591472).

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

18313747504 is a wasteful number, since it uses less digits than its factorization.

18313747504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88046884 (or 88046878 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The spelling of 18313747504 in words is "eighteen billion, three hundred thirteen million, seven hundred forty-seven thousand, five hundred four".