18516147132 has 48 divisors (see below), whose sum is σ = 49477890560. Its totient is φ = 5279452992.

The previous prime is 18516147109. The next prime is 18516147137. The reversal of 18516147132 is 23174161581.

It is a super-2 number, since 2×18516147132² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18516147137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185407 + ... + 267222.

Almost surely, 2^18516147132 is an apocalyptic number.

18516147132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18516147132 is an abundant number, since it is smaller than the sum of its proper divisors (30961743428).

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

18516147132 is a wasteful number, since it uses less digits than its factorization.

18516147132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453130 (or 453128 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The spelling of 18516147132 in words is "eighteen billion, five hundred sixteen million, one hundred forty-seven thousand, one hundred thirty-two".