18976467980 has 12 divisors (see below), whose sum is σ = 39850582800. Its totient is φ = 7590587184.

The previous prime is 18976467977. The next prime is 18976468013. The reversal of 18976467980 is 8976467981.

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, 474411680 + ... + 474411719.

It is an arithmetic number, because the mean of its divisors is an integer number (3320881900).

Almost surely, 2^18976467980 is an apocalyptic number.

18976467980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18976467980 is an abundant number, since it is smaller than the sum of its proper divisors (20874114820).

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

18976467980 is a wasteful number, since it uses less digits than its factorization.

18976467980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948823408 (or 948823406 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 65.

Subtracting from 18976467980 its reverse (8976467981), we obtain a palindrome (9999999999).

The spelling of 18976467980 in words is "eighteen billion, nine hundred seventy-six million, four hundred sixty-seven thousand, nine hundred eighty".