1317257418 has 8 divisors (see below), whose sum is σ = 2634514848. Its totient is φ = 439085804.

The previous prime is 1317257413. The next prime is 1317257437. The reversal of 1317257418 is 8147527131.

It is a happy number.

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

1317257418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1317257413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109771446 + ... + 109771457.

It is an arithmetic number, because the mean of its divisors is an integer number (329314356).

Almost surely, 2^1317257418 is an apocalyptic number.

1317257418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1317257418 is a wasteful number, since it uses less digits than its factorization.

1317257418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219542908.

The product of its digits is 47040, while the sum is 39.

The square root of 1317257418 is about 36294.0410811472. The cubic root of 1317257418 is about 1096.2010598910.

The spelling of 1317257418 in words is "one billion, three hundred seventeen million, two hundred fifty-seven thousand, four hundred eighteen".