18331429886 has 128 divisors (see below), whose sum is σ = 36138009600. Its totient is φ = 6909235200.

The previous prime is 18331429867. The next prime is 18331429901. The reversal of 18331429886 is 68892413381.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 59711345 + ... + 59711651.

It is an arithmetic number, because the mean of its divisors is an integer number (282328200).

Almost surely, 2^18331429886 is an apocalyptic number.

18331429886 is a deficient number, since it is larger than the sum of its proper divisors (17806579714).

18331429886 is a wasteful number, since it uses less digits than its factorization.

18331429886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575 (or 561 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 53.

The spelling of 18331429886 in words is "eighteen billion, three hundred thirty-one million, four hundred twenty-nine thousand, eight hundred eighty-six".