18838668606 has 32 divisors (see below), whose sum is σ = 39762403200. Its totient is φ = 5933746080.

The previous prime is 18838668601. The next prime is 18838668617. The reversal of 18838668606 is 60686683881.

It is a self number, because there is not a number n which added to its sum of digits gives 18838668606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18838668601) 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 15 ways as a sum of consecutive naturals, for example, 168060 + ... + 256751.

It is an arithmetic number, because the mean of its divisors is an integer number (1242575100).

Almost surely, 2^18838668606 is an apocalyptic number.

18838668606 is an abundant number, since it is smaller than the sum of its proper divisors (20923734594).

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

18838668606 is a wasteful number, since it uses less digits than its factorization.

18838668606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425224.

The product of its (nonzero) digits is 15925248, while the sum is 60.

The spelling of 18838668606 in words is "eighteen billion, eight hundred thirty-eight million, six hundred sixty-eight thousand, six hundred six".