18499859937 has 24 divisors (see below), whose sum is σ = 28783809600. Its totient is φ = 11382056928.

The previous prime is 18499859921. The next prime is 18499859953. The reversal of 18499859937 is 73995899481.

18499859937 is a `hidden beast` number, since 18 + 499 + 8 + 5 + 99 + 37 = 666.

It is an interprime number because it is at equal distance from previous prime (18499859921) and next prime (18499859953).

It is not a de Polignac number, because 18499859937 - 2⁴ = 18499859921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18499859737) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 626614 + ... + 655472.

It is an arithmetic number, because the mean of its divisors is an integer number (1199325400).

Almost surely, 2^18499859937 is an apocalyptic number.

It is an amenable number.

18499859937 is a deficient number, since it is larger than the sum of its proper divisors (10283949663).

18499859937 is a wasteful number, since it uses less digits than its factorization.

18499859937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34357 (or 34354 counting only the distinct ones).

The product of its digits is 176359680, while the sum is 72.

The spelling of 18499859937 in words is "eighteen billion, four hundred ninety-nine million, eight hundred fifty-nine thousand, nine hundred thirty-seven".