18598989606 has 32 divisors (see below), whose sum is σ = 39717976320. Its totient is φ = 5792201184.

The previous prime is 18598989589. The next prime is 18598989611. The reversal of 18598989606 is 60698989581.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

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, 1561221 + ... + 1573088.

It is an arithmetic number, because the mean of its divisors is an integer number (1241186760).

Almost surely, 2^18598989606 is an apocalyptic number.

18598989606 is an abundant number, since it is smaller than the sum of its proper divisors (21118986714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18598989606 is a wasteful number, since it uses less digits than its factorization.

18598989606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3134380.

The product of its (nonzero) digits is 67184640, while the sum is 69.

The spelling of 18598989606 in words is "eighteen billion, five hundred ninety-eight million, nine hundred eighty-nine thousand, six hundred six".