318786538368 has 64 divisors (see below), whose sum is σ = 850507269120. Its totient is φ = 105794035200.

The previous prime is 318786538363. The next prime is 318786538373. The reversal of 318786538368 is 863835687813.

It is an interprime number because it is at equal distance from previous prime (318786538363) and next prime (318786538373).

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×318786538368² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 318786538299 and 318786538308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318786538363) 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, 1741408 + ... + 1915743.

It is an arithmetic number, because the mean of its divisors is an integer number (13289176080).

Almost surely, 2^318786538368 is an apocalyptic number.

It is an amenable number.

318786538368 is an abundant number, since it is smaller than the sum of its proper divisors (531720730752).

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

318786538368 is a wasteful number, since it uses less digits than its factorization.

318786538368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657395 (or 3657383 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 66.

The spelling of 318786538368 in words is "three hundred eighteen billion, seven hundred eighty-six million, five hundred thirty-eight thousand, three hundred sixty-eight".