18533480264 has 128 divisors (see below), whose sum is σ = 39897446400. Its totient is φ = 8011560960.

The previous prime is 18533480237. The next prime is 18533480297. The reversal of 18533480264 is 46208433581.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12462929 + ... + 12464415.

It is an arithmetic number, because the mean of its divisors is an integer number (311698800).

Almost surely, 2^18533480264 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 18533480264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19948723200).

18533480264 is an abundant number, since it is smaller than the sum of its proper divisors (21363966136).

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

18533480264 is a wasteful number, since it uses less digits than its factorization.

18533480264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 44.

The spelling of 18533480264 in words is "eighteen billion, five hundred thirty-three million, four hundred eighty thousand, two hundred sixty-four".