18675660658 has 32 divisors (see below), whose sum is σ = 31027173120. Its totient is φ = 8385738240.

The previous prime is 18675660649. The next prime is 18675660781. The reversal of 18675660658 is 85606657681.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290643 + ... + 349033.

It is an arithmetic number, because the mean of its divisors is an integer number (969599160).

Almost surely, 2^18675660658 is an apocalyptic number.

18675660658 is a deficient number, since it is larger than the sum of its proper divisors (12351512462).

18675660658 is a wasteful number, since it uses less digits than its factorization.

18675660658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58842.

The product of its (nonzero) digits is 14515200, while the sum is 58.

The spelling of 18675660658 in words is "eighteen billion, six hundred seventy-five million, six hundred sixty thousand, six hundred fifty-eight".