318904160669 has 2 divisors, whose sum is σ = 318904160670. Its totient is φ = 318904160668.

The previous prime is 318904160651. The next prime is 318904160677. The reversal of 318904160669 is 966061409813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241216535044 + 77687625625 = 491138^2 + 278725^2 .

It is an emirp because it is prime and its reverse (966061409813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318904160669 - 2⁸ = 318904160413 is a prime.

It is a super-2 number, since 2×318904160669² (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 318904160669.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318904160639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159452080334 + 159452080335.

It is an arithmetic number, because the mean of its divisors is an integer number (159452080335).

Almost surely, 2^318904160669 is an apocalyptic number.

It is an amenable number.

318904160669 is a deficient number, since it is larger than the sum of its proper divisors (1).

318904160669 is an equidigital number, since it uses as much as digits as its factorization.

318904160669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 318904160669 in words is "three hundred eighteen billion, nine hundred four million, one hundred sixty thousand, six hundred sixty-nine".