18238472134 has 64 divisors (see below), whose sum is σ = 31076870400. Its totient is φ = 7976060928.

The previous prime is 18238472129. The next prime is 18238472143. The reversal of 18238472134 is 43127483281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12248062 + ... + 12249550.

It is an arithmetic number, because the mean of its divisors is an integer number (485576100).

Almost surely, 2^18238472134 is an apocalyptic number.

18238472134 is a deficient number, since it is larger than the sum of its proper divisors (12838398266).

18238472134 is a wasteful number, since it uses less digits than its factorization.

18238472134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1877.

The product of its digits is 258048, while the sum is 43.

The spelling of 18238472134 in words is "eighteen billion, two hundred thirty-eight million, four hundred seventy-two thousand, one hundred thirty-four".