18872529920 has 88 divisors (see below), whose sum is σ = 45320580000. Its totient is φ = 7540908032.

The previous prime is 18872529919. The next prime is 18872529937. The reversal of 18872529920 is 2992527881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7673651 + ... + 7676109.

Almost surely, 2^18872529920 is an apocalyptic number.

18872529920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18872529920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22660290000).

18872529920 is an abundant number, since it is smaller than the sum of its proper divisors (26448050080).

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

18872529920 is a wasteful number, since it uses less digits than its factorization.

18872529920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3983 (or 3965 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 18872529920 in words is "eighteen billion, eight hundred seventy-two million, five hundred twenty-nine thousand, nine hundred twenty".