318493927 has 2 divisors, whose sum is σ = 318493928. Its totient is φ = 318493926.

The previous prime is 318493913. The next prime is 318493933. The reversal of 318493927 is 729394813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318493927 - 2²³ = 310105319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318493937) 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, 159246963 + 159246964.

It is an arithmetic number, because the mean of its divisors is an integer number (159246964).

Almost surely, 2^318493927 is an apocalyptic number.

318493927 is a deficient number, since it is larger than the sum of its proper divisors (1).

318493927 is an equidigital number, since it uses as much as digits as its factorization.

318493927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 318493927 is about 17846.3981520082. The cubic root of 318493927 is about 682.9156288893.

The spelling of 318493927 in words is "three hundred eighteen million, four hundred ninety-three thousand, nine hundred twenty-seven".