318857297392 has 10 divisors (see below), whose sum is σ = 617786013728. Its totient is φ = 159428648688.

The previous prime is 318857297347. The next prime is 318857297393. The reversal of 318857297392 is 293792758813.

It is a happy number.

It is a super-2 number, since 2×318857297392² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318857297393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9964290528 + ... + 9964290559.

Almost surely, 2^318857297392 is an apocalyptic number.

It is an amenable number.

318857297392 is a deficient number, since it is larger than the sum of its proper divisors (298928716336).

318857297392 is a wasteful number, since it uses less digits than its factorization.

318857297392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19928581095 (or 19928581089 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 64.

The spelling of 318857297392 in words is "three hundred eighteen billion, eight hundred fifty-seven million, two hundred ninety-seven thousand, three hundred ninety-two".