318856501819 has 2 divisors, whose sum is σ = 318856501820. Its totient is φ = 318856501818.

The previous prime is 318856501757. The next prime is 318856501837. The reversal of 318856501819 is 918105658813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318856501819 - 2²⁷ = 318722284091 is a prime.

It is a super-2 number, since 2×318856501819² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 318856501819.

It is not a weakly prime, because it can be changed into another prime (318856501919) 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, 159428250909 + 159428250910.

It is an arithmetic number, because the mean of its divisors is an integer number (159428250910).

Almost surely, 2^318856501819 is an apocalyptic number.

318856501819 is a deficient number, since it is larger than the sum of its proper divisors (1).

318856501819 is an equidigital number, since it uses as much as digits as its factorization.

318856501819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2073600, while the sum is 55.

The spelling of 318856501819 in words is "three hundred eighteen billion, eight hundred fifty-six million, five hundred one thousand, eight hundred nineteen".