18875474992 has 80 divisors (see below), whose sum is σ = 41365209600. Its totient is φ = 8265125120.

The previous prime is 18875474987. The next prime is 18875475013. The reversal of 18875474992 is 29947457881.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2379609 + ... + 2387527.

It is an arithmetic number, because the mean of its divisors is an integer number (517065120).

Almost surely, 2^18875474992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18875474992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20682604800).

18875474992 is an abundant number, since it is smaller than the sum of its proper divisors (22489734608).

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

18875474992 is a wasteful number, since it uses less digits than its factorization.

18875474992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8434 (or 8428 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 64.

The spelling of 18875474992 in words is "eighteen billion, eight hundred seventy-five million, four hundred seventy-four thousand, nine hundred ninety-two".