318918755243 has 16 divisors (see below), whose sum is σ = 372174463584. Its totient is φ = 270058536960.

The previous prime is 318918755231. The next prime is 318918755269. The reversal of 318918755243 is 342557819813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318918755243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (318918758243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8772830 + ... + 8809107.

It is an arithmetic number, because the mean of its divisors is an integer number (23260903974).

Almost surely, 2^318918755243 is an apocalyptic number.

318918755243 is a deficient number, since it is larger than the sum of its proper divisors (53255708341).

318918755243 is a wasteful number, since it uses less digits than its factorization.

318918755243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17582062.

The product of its digits is 7257600, while the sum is 56.

The spelling of 318918755243 in words is "three hundred eighteen billion, nine hundred eighteen million, seven hundred fifty-five thousand, two hundred forty-three".