1313378613 has 12 divisors (see below), whose sum is σ = 1910752480. Its totient is φ = 869285736.

The previous prime is 1313378611. The next prime is 1313378623. The reversal of 1313378613 is 3168733131.

It is a happy number.

1313378613 is a `hidden beast` number, since 1 + 3 + 1 + 3 + 37 + 8 + 613 = 666.

It is not a de Polignac number, because 1313378613 - 2¹ = 1313378611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313378611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523681 + ... + 526182.

Almost surely, 2^1313378613 is an apocalyptic number.

It is an amenable number.

1313378613 is a deficient number, since it is larger than the sum of its proper divisors (597373867).

1313378613 is a wasteful number, since it uses less digits than its factorization.

1313378613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050008 (or 1050005 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 1313378613 is about 36240.5658482315. The cubic root of 1313378613 is about 1095.1240417433.

The spelling of 1313378613 in words is "one billion, three hundred thirteen million, three hundred seventy-eight thousand, six hundred thirteen".