18738031678264 has 16 divisors (see below), whose sum is σ = 35496013618800. Its totient is φ = 9272428046592.

The previous prime is 18738031678241. The next prime is 18738031678277. The reversal of 18738031678264 is 46287613083781.

It is a super-2 number, since 2×18738031678264² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18738031678196 and 18738031678205.

It is a congruent number.

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, 12073473244 + ... + 12073474795.

It is an arithmetic number, because the mean of its divisors is an integer number (2218500851175).

Almost surely, 2^{18738031678264} is an apocalyptic number.

It is an amenable number.

18738031678264 is a deficient number, since it is larger than the sum of its proper divisors (16757981940536).

18738031678264 is a wasteful number, since it uses less digits than its factorization.

18738031678264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24146948142 (or 24146948138 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 18738031678264 in words is "eighteen trillion, seven hundred thirty-eight billion, thirty-one million, six hundred seventy-eight thousand, two hundred sixty-four".