18113708864 has 28 divisors (see below), whose sum is σ = 36024502500. Its totient is φ = 9036668928.

The previous prime is 18113708839. The next prime is 18113708911. The reversal of 18113708864 is 46880731181.

It can be written as a sum of positive squares in 2 ways, for example, as 7155806464 + 10957902400 = 84592^2 + 104680^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 286439 + ... + 343910.

It is an arithmetic number, because the mean of its divisors is an integer number (1286589375).

Almost surely, 2^18113708864 is an apocalyptic number.

It is an amenable number.

18113708864 is a deficient number, since it is larger than the sum of its proper divisors (17910793636).

18113708864 is an equidigital number, since it uses as much as digits as its factorization.

18113708864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630810 (or 630800 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 47.

The spelling of 18113708864 in words is "eighteen billion, one hundred thirteen million, seven hundred eight thousand, eight hundred sixty-four".