18971412732 has 60 divisors (see below), whose sum is σ = 49608586720. Its totient is φ = 6322074624.

The previous prime is 18971412721. The next prime is 18971412739. The reversal of 18971412732 is 23721417981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18971412739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1824444 + ... + 1834812.

Almost surely, 2^18971412732 is an apocalyptic number.

18971412732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18971412732 is an abundant number, since it is smaller than the sum of its proper divisors (30637173988).

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

18971412732 is a wasteful number, since it uses less digits than its factorization.

18971412732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16032 (or 16021 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The spelling of 18971412732 in words is "eighteen billion, nine hundred seventy-one million, four hundred twelve thousand, seven hundred thirty-two".