1313541657 has 8 divisors (see below), whose sum is σ = 1945987680. Its totient is φ = 875694420.

The previous prime is 1313541637. The next prime is 1313541679. The reversal of 1313541657 is 7561453131.

It is not a de Polignac number, because 1313541657 - 2⁷ = 1313541529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1313541617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24324819 + ... + 24324872.

It is an arithmetic number, because the mean of its divisors is an integer number (243248460).

Almost surely, 2^1313541657 is an apocalyptic number.

It is an amenable number.

1313541657 is a deficient number, since it is larger than the sum of its proper divisors (632446023).

1313541657 is an equidigital number, since it uses as much as digits as its factorization.

1313541657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48649700 (or 48649694 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 1313541657 is about 36242.8152466113. The cubic root of 1313541657 is about 1095.1693564288.

Adding to 1313541657 its reverse (7561453131), we get a palindrome (8874994788).

The spelling of 1313541657 in words is "one billion, three hundred thirteen million, five hundred forty-one thousand, six hundred fifty-seven".