1318326657 has 8 divisors (see below), whose sum is σ = 1758378720. Its totient is φ = 878579520.

The previous prime is 1318326619. The next prime is 1318326661. The reversal of 1318326657 is 7566238131.

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

It is not a de Polignac number, because 1318326657 - 2⁶ = 1318326593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1318326617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65944 + ... + 83577.

It is an arithmetic number, because the mean of its divisors is an integer number (219797340).

Almost surely, 2^1318326657 is an apocalyptic number.

It is an amenable number.

1318326657 is a deficient number, since it is larger than the sum of its proper divisors (440052063).

1318326657 is a wasteful number, since it uses less digits than its factorization.

1318326657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152463.

The product of its digits is 181440, while the sum is 42.

The square root of 1318326657 is about 36308.7683211645. The cubic root of 1318326657 is about 1096.4975810099.

The spelling of 1318326657 in words is "one billion, three hundred eighteen million, three hundred twenty-six thousand, six hundred fifty-seven".