18138052764 has 288 divisors, whose sum is σ = 54076646400. Its totient is φ = 5240401920.

The previous prime is 18138052759. The next prime is 18138052819. The reversal of 18138052764 is 46725083181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 66929949 + ... + 66930219.

Almost surely, 2^18138052764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18138052764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27038323200).

18138052764 is an abundant number, since it is smaller than the sum of its proper divisors (35938593636).

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

18138052764 is a wasteful number, since it uses less digits than its factorization.

18138052764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 18138052764 in words is "eighteen billion, one hundred thirty-eight million, fifty-two thousand, seven hundred sixty-four".