18385476764 has 12 divisors (see below), whose sum is σ = 32781652344. Its totient is φ = 9019290384.

The previous prime is 18385476751. The next prime is 18385476797. The reversal of 18385476764 is 46767458381.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 43361762 + ... + 43362185.

It is an arithmetic number, because the mean of its divisors is an integer number (2731804362).

Almost surely, 2^18385476764 is an apocalyptic number.

It is an amenable number.

18385476764 is a deficient number, since it is larger than the sum of its proper divisors (14396175580).

18385476764 is a wasteful number, since it uses less digits than its factorization.

18385476764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86724004 (or 86724002 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 59.

The spelling of 18385476764 in words is "eighteen billion, three hundred eighty-five million, four hundred seventy-six thousand, seven hundred sixty-four".