18874515900 has 36 divisors (see below), whose sum is σ = 54610266872. Its totient is φ = 5033204160.

The previous prime is 18874515883. The next prime is 18874515901. The reversal of 18874515900 is 951547881.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18874515900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874515901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31457227 + ... + 31457826.

Almost surely, 2^18874515900 is an apocalyptic number.

18874515900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18874515900 is an abundant number, since it is smaller than the sum of its proper divisors (35735750972).

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

18874515900 is a wasteful number, since it uses less digits than its factorization.

18874515900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62915070 (or 62915063 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 48.

The spelling of 18874515900 in words is "eighteen billion, eight hundred seventy-four million, five hundred fifteen thousand, nine hundred".