318148669 has 2 divisors, whose sum is σ = 318148670. Its totient is φ = 318148668.

The previous prime is 318148639. The next prime is 318148723. The reversal of 318148669 is 966841813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199883044 + 118265625 = 14138^2 + 10875^2 .

It is a cyclic number.

It is not a de Polignac number, because 318148669 - 2⁵ = 318148637 is a prime.

It is a super-2 number, since 2×318148669² = 202437151172943122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318148619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159074334 + 159074335.

It is an arithmetic number, because the mean of its divisors is an integer number (159074335).

Almost surely, 2^318148669 is an apocalyptic number.

It is an amenable number.

318148669 is a deficient number, since it is larger than the sum of its proper divisors (1).

318148669 is an equidigital number, since it uses as much as digits as its factorization.

318148669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 46.

The square root of 318148669 is about 17836.7224848065. The cubic root of 318148669 is about 682.6687719227.

The spelling of 318148669 in words is "three hundred eighteen million, one hundred forty-eight thousand, six hundred sixty-nine".