1318356617 has 16 divisors (see below), whose sum is σ = 1382693760. Its totient is φ = 1255406208.

The previous prime is 1318356607. The next prime is 1318356643. The reversal of 1318356617 is 7166538131.

It is a cyclic number.

It is not a de Polignac number, because 1318356617 - 2¹² = 1318352521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1318356607) 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 15 ways as a sum of consecutive naturals, for example, 662498 + ... + 664484.

It is an arithmetic number, because the mean of its divisors is an integer number (86418360).

Almost surely, 2^1318356617 is an apocalyptic number.

It is an amenable number.

1318356617 is a deficient number, since it is larger than the sum of its proper divisors (64337143).

1318356617 is a wasteful number, since it uses less digits than its factorization.

1318356617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320.

The product of its digits is 90720, while the sum is 41.

The square root of 1318356617 is about 36309.1808913393. The cubic root of 1318356617 is about 1096.5058872008.

The spelling of 1318356617 in words is "one billion, three hundred eighteen million, three hundred fifty-six thousand, six hundred seventeen".