18690608079 has 48 divisors (see below), whose sum is σ = 31764174624. Its totient is φ = 10440864000.

The previous prime is 18690608077. The next prime is 18690608087. The reversal of 18690608079 is 97080609681.

It is not a de Polignac number, because 18690608079 - 2¹ = 18690608077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18690608077) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 891829 + ... + 912545.

It is an arithmetic number, because the mean of its divisors is an integer number (661753638).

Almost surely, 2^18690608079 is an apocalyptic number.

18690608079 is a deficient number, since it is larger than the sum of its proper divisors (13073566545).

18690608079 is a wasteful number, since it uses less digits than its factorization.

18690608079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21448 (or 21445 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 18690608079 in words is "eighteen billion, six hundred ninety million, six hundred eight thousand, seventy-nine".