18713551384 has 16 divisors (see below), whose sum is σ = 38277718920. Its totient is φ = 8506159680.

The previous prime is 18713551277. The next prime is 18713551399. The reversal of 18713551384 is 48315531781.

It is a congruent 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, 106326909 + ... + 106327084.

Almost surely, 2^18713551384 is an apocalyptic number.

It is an amenable number.

18713551384 is an abundant number, since it is smaller than the sum of its proper divisors (19564167536).

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

18713551384 is a wasteful number, since it uses less digits than its factorization.

18713551384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212654010 (or 212654006 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The spelling of 18713551384 in words is "eighteen billion, seven hundred thirteen million, five hundred fifty-one thousand, three hundred eighty-four".