18936714663 has 24 divisors (see below), whose sum is σ = 28100257328. Its totient is φ = 12279796992.

The previous prime is 18936714617. The next prime is 18936714679. The reversal of 18936714663 is 36641763981.

It is a happy number.

18936714663 is a `hidden beast` number, since 1 + 89 + 36 + 71 + 466 + 3 = 666.

It is not a de Polignac number, because 18936714663 - 2²¹ = 18934617511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18936716663) 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, 1737156 + ... + 1748022.

Almost surely, 2^18936714663 is an apocalyptic number.

18936714663 is a deficient number, since it is larger than the sum of its proper divisors (9163542665).

18936714663 is a wasteful number, since it uses less digits than its factorization.

18936714663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16143 (or 16140 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The spelling of 18936714663 in words is "eighteen billion, nine hundred thirty-six million, seven hundred fourteen thousand, six hundred sixty-three".