318918697943 has 2 divisors, whose sum is σ = 318918697944. Its totient is φ = 318918697942.

The previous prime is 318918697901. The next prime is 318918697957. The reversal of 318918697943 is 349796819813.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 318918697943 - 2¹⁸ = 318918435799 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318918697963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159459348971 + 159459348972.

It is an arithmetic number, because the mean of its divisors is an integer number (159459348972).

Almost surely, 2^318918697943 is an apocalyptic number.

318918697943 is a deficient number, since it is larger than the sum of its proper divisors (1).

318918697943 is an equidigital number, since it uses as much as digits as its factorization.

318918697943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70543872, while the sum is 68.

The spelling of 318918697943 in words is "three hundred eighteen billion, nine hundred eighteen million, six hundred ninety-seven thousand, nine hundred forty-three".