318726899 has 2 divisors, whose sum is σ = 318726900. Its totient is φ = 318726898.

The previous prime is 318726883. The next prime is 318726913. The reversal of 318726899 is 998627813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318726899 - 2⁴ = 318726883 is a prime.

It is a super-2 number, since 2×318726899² = 203173672292312402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318726899.

It is not a weakly prime, because it can be changed into another prime (318726809) 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, 159363449 + 159363450.

It is an arithmetic number, because the mean of its divisors is an integer number (159363450).

Almost surely, 2^318726899 is an apocalyptic number.

318726899 is a deficient number, since it is larger than the sum of its proper divisors (1).

318726899 is an equidigital number, since it uses as much as digits as its factorization.

318726899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1306368, while the sum is 53.

The square root of 318726899 is about 17852.9241022304. The cubic root of 318726899 is about 683.0821013914.

The spelling of 318726899 in words is "three hundred eighteen million, seven hundred twenty-six thousand, eight hundred ninety-nine".