18700684144 has 40 divisors (see below), whose sum is σ = 36551323760. Its totient is φ = 9268300800.

The previous prime is 18700684111. The next prime is 18700684193. The reversal of 18700684144 is 44148600781.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18700684144.

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, 1463704 + ... + 1476424.

It is an arithmetic number, because the mean of its divisors is an integer number (913783094).

Almost surely, 2^18700684144 is an apocalyptic number.

It is an amenable number.

18700684144 is a deficient number, since it is larger than the sum of its proper divisors (17850639616).

18700684144 is a wasteful number, since it uses less digits than its factorization.

18700684144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13529 (or 13523 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 18700684144 in words is "eighteen billion, seven hundred million, six hundred eighty-four thousand, one hundred forty-four".