18836522660 has 12 divisors (see below), whose sum is σ = 39556697628. Its totient is φ = 7534609056.

The previous prime is 18836522647. The next prime is 18836522687. The reversal of 18836522660 is 6622563881.

It can be written as a sum of positive squares in 2 ways, for example, as 2624103076 + 16212419584 = 51226^2 + 127328^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470913047 + ... + 470913086.

It is an arithmetic number, because the mean of its divisors is an integer number (3296391469).

Almost surely, 2^18836522660 is an apocalyptic number.

18836522660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18836522660 is an abundant number, since it is smaller than the sum of its proper divisors (20720174968).

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

18836522660 is a wasteful number, since it uses less digits than its factorization.

18836522660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941826142 (or 941826140 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 47.

The spelling of 18836522660 in words is "eighteen billion, eight hundred thirty-six million, five hundred twenty-two thousand, six hundred sixty".