18713583432 has 24 divisors (see below), whose sum is σ = 50682621990. Its totient is φ = 6237861120.

The previous prime is 18713583431. The next prime is 18713583439. The reversal of 18713583432 is 23438531781.

18713583432 is a `hidden beast` number, since 1 + 8 + 7 + 135 + 83 + 432 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17628935076 + 1084648356 = 132774^2 + 32934^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (18713583431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 129955369 + ... + 129955512.

Almost surely, 2^18713583432 is an apocalyptic number.

18713583432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18713583432 is an abundant number, since it is smaller than the sum of its proper divisors (31969038558).

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

18713583432 is a wasteful number, since it uses less digits than its factorization.

18713583432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259910893 (or 259910886 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 18713583432 in words is "eighteen billion, seven hundred thirteen million, five hundred eighty-three thousand, four hundred thirty-two".