318938616 has 72 divisors (see below), whose sum is σ = 885053520. Its totient is φ = 103711968.

The previous prime is 318938597. The next prime is 318938621. The reversal of 318938616 is 616839813.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1038735 + ... + 1039041.

It is an arithmetic number, because the mean of its divisors is an integer number (12292410).

Almost surely, 2^318938616 is an apocalyptic number.

318938616 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 318938616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (442526760).

318938616 is an abundant number, since it is smaller than the sum of its proper divisors (566114904).

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

318938616 is a wasteful number, since it uses less digits than its factorization.

318938616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673 (or 359 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 318938616 is about 17858.8525947218. The cubic root of 318938616 is about 683.2333155749.

The spelling of 318938616 in words is "three hundred eighteen million, nine hundred thirty-eight thousand, six hundred sixteen".