1317549539 has 8 divisors (see below), whose sum is σ = 1353653328. Its totient is φ = 1281471840.

The previous prime is 1317549533. The next prime is 1317549577. The reversal of 1317549539 is 9359457131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1317549539 is a prime.

It is a super-2 number, since 2×1317549539² = 3471873575438225042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1317549493 and 1317549502.

It is not an unprimeable number, because it can be changed into a prime (1317549533) 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, 140384 + ... + 149474.

It is an arithmetic number, because the mean of its divisors is an integer number (169206666).

Almost surely, 2^1317549539 is an apocalyptic number.

1317549539 is a deficient number, since it is larger than the sum of its proper divisors (36103789).

1317549539 is an equidigital number, since it uses as much as digits as its factorization.

1317549539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13045.

The product of its digits is 510300, while the sum is 47.

The square root of 1317549539 is about 36298.0652239207. The cubic root of 1317549539 is about 1096.2820867470.

The spelling of 1317549539 in words is "one billion, three hundred seventeen million, five hundred forty-nine thousand, five hundred thirty-nine".