313954974649 has 2 divisors, whose sum is σ = 313954974650. Its totient is φ = 313954974648.

The previous prime is 313954974623. The next prime is 313954974701. The reversal of 313954974649 is 946479459313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 299693838249 + 14261136400 = 547443^2 + 119420^2 .

It is a cyclic number.

It is not a de Polignac number, because 313954974649 - 2²⁵ = 313921420217 is a prime.

It is a super-2 number, since 2×313954974649² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313954974449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156977487324 + 156977487325.

It is an arithmetic number, because the mean of its divisors is an integer number (156977487325).

Almost surely, 2^313954974649 is an apocalyptic number.

It is an amenable number.

313954974649 is a deficient number, since it is larger than the sum of its proper divisors (1).

313954974649 is an equidigital number, since it uses as much as digits as its factorization.

313954974649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 88179840, while the sum is 64.

The spelling of 313954974649 in words is "three hundred thirteen billion, nine hundred fifty-four million, nine hundred seventy-four thousand, six hundred forty-nine".