18311538742 has 16 divisors (see below), whose sum is σ = 31493468160. Its totient is φ = 7822237608.

The previous prime is 18311538737. The next prime is 18311538793. The reversal of 18311538742 is 24783511381.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2125942 + ... + 2134537.

It is an arithmetic number, because the mean of its divisors is an integer number (1968341760).

Almost surely, 2^18311538742 is an apocalyptic number.

18311538742 is a deficient number, since it is larger than the sum of its proper divisors (13181929418).

18311538742 is a wasteful number, since it uses less digits than its factorization.

18311538742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4260795.

The product of its digits is 161280, while the sum is 43.

The spelling of 18311538742 in words is "eighteen billion, three hundred eleven million, five hundred thirty-eight thousand, seven hundred forty-two".