18806873133 has 32 divisors (see below), whose sum is σ = 25624547712. Its totient is φ = 12266496000.

The previous prime is 18806873123. The next prime is 18806873161. The reversal of 18806873133 is 33137860881.

It is not a de Polignac number, because 18806873133 - 2²⁴ = 18790095917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18806873123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28451823 + ... + 28452483.

It is an arithmetic number, because the mean of its divisors is an integer number (800767116).

Almost surely, 2^18806873133 is an apocalyptic number.

It is an amenable number.

18806873133 is a deficient number, since it is larger than the sum of its proper divisors (6817674579).

18806873133 is a wasteful number, since it uses less digits than its factorization.

18806873133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1485.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 18806873133 in words is "eighteen billion, eight hundred six million, eight hundred seventy-three thousand, one hundred thirty-three".