318163249 has 2 divisors, whose sum is σ = 318163250. Its totient is φ = 318163248.

The previous prime is 318163217. The next prime is 318163267. The reversal of 318163249 is 942361813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315417600 + 2745649 = 17760^2 + 1657^2 .

It is a cyclic number.

It is not a de Polignac number, because 318163249 - 2⁵ = 318163217 is a prime.

It is not a weakly prime, because it can be changed into another prime (318163849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159081624 + 159081625.

It is an arithmetic number, because the mean of its divisors is an integer number (159081625).

Almost surely, 2^318163249 is an apocalyptic number.

It is an amenable number.

318163249 is a deficient number, since it is larger than the sum of its proper divisors (1).

318163249 is an equidigital number, since it uses as much as digits as its factorization.

318163249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 37.

The square root of 318163249 is about 17837.1311874976. The cubic root of 318163249 is about 682.6792001278.

It can be divided in two parts, 3181 and 63249, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 318163249 in words is "three hundred eighteen million, one hundred sixty-three thousand, two hundred forty-nine".