1313847657 has 12 divisors (see below), whose sum is σ = 1921803520. Its totient is φ = 864810648.

The previous prime is 1313847631. The next prime is 1313847677. The reversal of 1313847657 is 7567483131.

It is not a de Polignac number, because 1313847657 - 2⁸ = 1313847401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313847677) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 923233 + ... + 924654.

Almost surely, 2^1313847657 is an apocalyptic number.

It is an amenable number.

1313847657 is a deficient number, since it is larger than the sum of its proper divisors (607955863).

1313847657 is a wasteful number, since it uses less digits than its factorization.

1313847657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847972 (or 1847969 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 1313847657 is about 36247.0365271425. The cubic root of 1313847657 is about 1095.2543926364.

The spelling of 1313847657 in words is "one billion, three hundred thirteen million, eight hundred forty-seven thousand, six hundred fifty-seven".