318672919 has 2 divisors, whose sum is σ = 318672920. Its totient is φ = 318672918.

The previous prime is 318672911. The next prime is 318672979. The reversal of 318672919 is 919276813.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318672919 - 2³ = 318672911 is a prime.

It is a super-2 number, since 2×318672919² = 203104858607961122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318672911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159336459 + 159336460.

It is an arithmetic number, because the mean of its divisors is an integer number (159336460).

Almost surely, 2^318672919 is an apocalyptic number.

318672919 is a deficient number, since it is larger than the sum of its proper divisors (1).

318672919 is an equidigital number, since it uses as much as digits as its factorization.

318672919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 46.

The square root of 318672919 is about 17851.4122410525. The cubic root of 318672919 is about 683.0435366580.

The spelling of 318672919 in words is "three hundred eighteen million, six hundred seventy-two thousand, nine hundred nineteen".