1317380659 has 4 divisors (see below), whose sum is σ = 1505577904. Its totient is φ = 1129183416.

The previous prime is 1317380657. The next prime is 1317380689. The reversal of 1317380659 is 9560837131.

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 1317380659 - 2¹ = 1317380657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317380657) 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, 94098612 + ... + 94098625.

It is an arithmetic number, because the mean of its divisors is an integer number (376394476).

Almost surely, 2^1317380659 is an apocalyptic number.

1317380659 is a deficient number, since it is larger than the sum of its proper divisors (188197245).

1317380659 is an equidigital number, since it uses as much as digits as its factorization.

1317380659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188197244.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1317380659 is about 36295.7388545818. The cubic root of 1317380659 is about 1096.2352452370.

The spelling of 1317380659 in words is "one billion, three hundred seventeen million, three hundred eighty thousand, six hundred fifty-nine".