318872089 has 2 divisors, whose sum is σ = 318872090. Its totient is φ = 318872088.

The previous prime is 318872063. The next prime is 318872093. The reversal of 318872089 is 980278813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309056400 + 9815689 = 17580^2 + 3133^2 .

It is a cyclic number.

It is not a de Polignac number, because 318872089 - 2¹⁵ = 318839321 is a prime.

It is not a weakly prime, because it can be changed into another prime (318872039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159436044 + 159436045.

It is an arithmetic number, because the mean of its divisors is an integer number (159436045).

Almost surely, 2^318872089 is an apocalyptic number.

It is an amenable number.

318872089 is a deficient number, since it is larger than the sum of its proper divisors (1).

318872089 is an equidigital number, since it uses as much as digits as its factorization.

318872089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 46.

The square root of 318872089 is about 17856.9899199165. The cubic root of 318872089 is about 683.1858073489.

The spelling of 318872089 in words is "three hundred eighteen million, eight hundred seventy-two thousand, eighty-nine".