18874637264 has 80 divisors (see below), whose sum is σ = 42486744960. Its totient is φ = 7955988480.

The previous prime is 18874637239. The next prime is 18874637281. The reversal of 18874637264 is 46273647881.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1918919 + ... + 1928729.

It is an arithmetic number, because the mean of its divisors is an integer number (531084312).

Almost surely, 2^18874637264 is an apocalyptic number.

18874637264 is a gapful number since it is divisible by the number (14) 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 18874637264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21243372480).

18874637264 is an abundant number, since it is smaller than the sum of its proper divisors (23612107696).

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

18874637264 is a wasteful number, since it uses less digits than its factorization.

18874637264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10108 (or 10102 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 56.

The spelling of 18874637264 in words is "eighteen billion, eight hundred seventy-four million, six hundred thirty-seven thousand, two hundred sixty-four".