1317665516 has 6 divisors (see below), whose sum is σ = 2305914660. Its totient is φ = 658832756.

The previous prime is 1317665491. The next prime is 1317665521. The reversal of 1317665516 is 6155667131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164708186 + ... + 164708193.

It is an arithmetic number, because the mean of its divisors is an integer number (384319110).

Almost surely, 2^1317665516 is an apocalyptic number.

It is an amenable number.

1317665516 is a deficient number, since it is larger than the sum of its proper divisors (988249144).

1317665516 is a wasteful number, since it uses less digits than its factorization.

1317665516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329416383 (or 329416381 counting only the distinct ones).

The product of its digits is 113400, while the sum is 41.

The square root of 1317665516 is about 36299.6627532543. The cubic root of 1317665516 is about 1096.3142524641.

The spelling of 1317665516 in words is "one billion, three hundred seventeen million, six hundred sixty-five thousand, five hundred sixteen".