18868719504 has 40 divisors (see below), whose sum is σ = 50061607360. Its totient is φ = 6119584128.

The previous prime is 18868719503. The next prime is 18868719601. The reversal of 18868719504 is 40591786881.

It is not an unprimeable number, because it can be changed into a prime (18868719503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5310364 + ... + 5313915.

It is an arithmetic number, because the mean of its divisors is an integer number (1251540184).

Almost surely, 2^18868719504 is an apocalyptic number.

It is an amenable number.

18868719504 is an abundant number, since it is smaller than the sum of its proper divisors (31192887856).

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

18868719504 is a wasteful number, since it uses less digits than its factorization.

18868719504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10624327 (or 10624321 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 57.

The spelling of 18868719504 in words is "eighteen billion, eight hundred sixty-eight million, seven hundred nineteen thousand, five hundred four".