1317125659 has 4 divisors (see below), whose sum is σ = 1374392016. Its totient is φ = 1259859304.

The previous prime is 1317125653. The next prime is 1317125669. The reversal of 1317125659 is 9565217131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1317125659 - 2²⁵ = 1283571227 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317125653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28633144 + ... + 28633189.

It is an arithmetic number, because the mean of its divisors is an integer number (343598004).

Almost surely, 2^1317125659 is an apocalyptic number.

1317125659 is a deficient number, since it is larger than the sum of its proper divisors (57266357).

1317125659 is an equidigital number, since it uses as much as digits as its factorization.

1317125659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57266356.

The product of its digits is 56700, while the sum is 40.

The square root of 1317125659 is about 36292.2258755233. The cubic root of 1317125659 is about 1096.1645094114.

The spelling of 1317125659 in words is "one billion, three hundred seventeen million, one hundred twenty-five thousand, six hundred fifty-nine".