318163842 has 32 divisors (see below), whose sum is σ = 709076160. Its totient is φ = 105747840.

The previous prime is 318163799. The next prime is 318163847. The reversal of 318163842 is 248361813.

318163842 is a `hidden beast` number, since 3 + 18 + 1 + 638 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 318163797 and 318163806.

It is not an unprimeable number, because it can be changed into a prime (318163847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10717 + ... + 27407.

It is an arithmetic number, because the mean of its divisors is an integer number (22158630).

Almost surely, 2^318163842 is an apocalyptic number.

318163842 is an abundant number, since it is smaller than the sum of its proper divisors (390912318).

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

318163842 is a wasteful number, since it uses less digits than its factorization.

318163842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17055 (or 17049 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 318163842 is about 17837.1478101181. The cubic root of 318163842 is about 682.6796242586.

The spelling of 318163842 in words is "three hundred eighteen million, one hundred sixty-three thousand, eight hundred forty-two".