18811453432 has 32 divisors (see below), whose sum is σ = 36828788400. Its totient is φ = 8996506624.

The previous prime is 18811453363. The next prime is 18811453433. The reversal of 18811453432 is 23435411881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18811453433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354073 + ... + 403720.

Almost surely, 2^18811453432 is an apocalyptic number.

It is an amenable number.

18811453432 is a deficient number, since it is larger than the sum of its proper divisors (18017334968).

18811453432 is a wasteful number, since it uses less digits than its factorization.

18811453432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757935 (or 757931 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The spelling of 18811453432 in words is "eighteen billion, eight hundred eleven million, four hundred fifty-three thousand, four hundred thirty-two".