1317338737 has 24 divisors (see below), whose sum is σ = 1585046120. Its totient is φ = 1087257600.

The previous prime is 1317338719. The next prime is 1317338747. The reversal of 1317338737 is 7378337131.

It can be written as a sum of positive squares in 4 ways, for example, as 38489616 + 1278849121 = 6204^2 + 35761^2 .

It is not a de Polignac number, because 1317338737 - 2¹¹ = 1317336689 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317338693 and 1317338702.

It is not an unprimeable number, because it can be changed into a prime (1317338747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89089 + ... + 102817.

Almost surely, 2^1317338737 is an apocalyptic number.

It is an amenable number.

1317338737 is a deficient number, since it is larger than the sum of its proper divisors (267707383).

1317338737 is a wasteful number, since it uses less digits than its factorization.

1317338737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13825 (or 13814 counting only the distinct ones).

The product of its digits is 222264, while the sum is 43.

The square root of 1317338737 is about 36295.1613441792. The cubic root of 1317338737 is about 1096.2236168943.

The spelling of 1317338737 in words is "one billion, three hundred seventeen million, three hundred thirty-eight thousand, seven hundred thirty-seven".