18539096517 has 6 divisors (see below), whose sum is σ = 26778694982. Its totient is φ = 12359397672.

The previous prime is 18539096509. The next prime is 18539096519. The reversal of 18539096517 is 71569093581.

18539096517 is a `hidden beast` number, since 1 + 8 + 5 + 39 + 0 + 96 + 517 = 666.

It can be written as a sum of positive squares in only one way, i.e., 16596138276 + 1942958241 = 128826^2 + 44079^2 .

It is not a de Polignac number, because 18539096517 - 2³ = 18539096509 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 (18539096519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029949798 + ... + 1029949815.

Almost surely, 2^18539096517 is an apocalyptic number.

It is an amenable number.

18539096517 is a deficient number, since it is larger than the sum of its proper divisors (8239598465).

18539096517 is a wasteful number, since it uses less digits than its factorization.

18539096517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059899619 (or 2059899616 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 54.

The spelling of 18539096517 in words is "eighteen billion, five hundred thirty-nine million, ninety-six thousand, five hundred seventeen".