1317956601 has 16 divisors (see below), whose sum is σ = 1900727360. Its totient is φ = 807503040.

The previous prime is 1317956593. The next prime is 1317956611. The reversal of 1317956601 is 1066597131.

It is a happy number.

It is not a de Polignac number, because 1317956601 - 2³ = 1317956593 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317956601.

It is not an unprimeable number, because it can be changed into a prime (1317956611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64855 + ... + 82716.

It is an arithmetic number, because the mean of its divisors is an integer number (118795460).

Almost surely, 2^1317956601 is an apocalyptic number.

It is an amenable number.

1317956601 is a deficient number, since it is larger than the sum of its proper divisors (582770759).

1317956601 is a wasteful number, since it uses less digits than its factorization.

1317956601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147816.

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 1317956601 is about 36303.6720043579. The cubic root of 1317956601 is about 1096.3949753118.

The spelling of 1317956601 in words is "one billion, three hundred seventeen million, nine hundred fifty-six thousand, six hundred one".