1317519668 has 12 divisors (see below), whose sum is σ = 2309512800. Its totient is φ = 657658872.

The previous prime is 1317519667. The next prime is 1317519683. The reversal of 1317519668 is 8669157131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317519667) 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, 272546 + ... + 277337.

It is an arithmetic number, because the mean of its divisors is an integer number (192459400).

Almost surely, 2^1317519668 is an apocalyptic number.

It is an amenable number.

1317519668 is a deficient number, since it is larger than the sum of its proper divisors (991993132).

1317519668 is a wasteful number, since it uses less digits than its factorization.

1317519668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550486 (or 550484 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 1317519668 is about 36297.6537533764. The cubic root of 1317519668 is about 1096.2738018493.

The spelling of 1317519668 in words is "one billion, three hundred seventeen million, five hundred nineteen thousand, six hundred sixty-eight".