18816657160 has 32 divisors (see below), whose sum is σ = 48385690560. Its totient is φ = 6451425216.

The previous prime is 18816657157. The next prime is 18816657161. The reversal of 18816657160 is 6175661881.

It is a happy number.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18816657161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33600894 + ... + 33601453.

It is an arithmetic number, because the mean of its divisors is an integer number (1512052830).

Almost surely, 2^18816657160 is an apocalyptic number.

18816657160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18816657160 is an abundant number, since it is smaller than the sum of its proper divisors (29569033400).

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

18816657160 is a wasteful number, since it uses less digits than its factorization.

18816657160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67202365 (or 67202361 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 18816657160 in words is "eighteen billion, eight hundred sixteen million, six hundred fifty-seven thousand, one hundred sixty".