318163076820 has 120 divisors (see below), whose sum is σ = 1032506382600. Its totient is φ = 81917837568.

The previous prime is 318163076783. The next prime is 318163076929. The reversal of 318163076820 is 28670361813.

318163076820 is a `hidden beast` number, since 3 + 1 + 8 + 1 + 630 + 7 + 6 + 8 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 20741184324 + 297421892496 = 144018^2 + 545364^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3339175 + ... + 3433134.

It is an arithmetic number, because the mean of its divisors is an integer number (8604219855).

Almost surely, 2^318163076820 is an apocalyptic number.

318163076820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

318163076820 is an abundant number, since it is smaller than the sum of its proper divisors (714343305780).

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

318163076820 is a wasteful number, since it uses less digits than its factorization.

318163076820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6772359 (or 6772348 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 318163076820 in words is "three hundred eighteen billion, one hundred sixty-three million, seventy-six thousand, eight hundred twenty".