318918697901 has 2 divisors, whose sum is σ = 318918697902. Its totient is φ = 318918697900.

The previous prime is 318918697871. The next prime is 318918697943. The reversal of 318918697901 is 109796819813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318489793801 + 428904100 = 564349^2 + 20710^2 .

It is an emirp because it is prime and its reverse (109796819813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318918697901 - 2¹⁸ = 318918435757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318918697961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159459348950 + 159459348951.

It is an arithmetic number, because the mean of its divisors is an integer number (159459348951).

Almost surely, 2^318918697901 is an apocalyptic number.

It is an amenable number.

318918697901 is a deficient number, since it is larger than the sum of its proper divisors (1).

318918697901 is an equidigital number, since it uses as much as digits as its factorization.

318918697901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 62.

The spelling of 318918697901 in words is "three hundred eighteen billion, nine hundred eighteen million, six hundred ninety-seven thousand, nine hundred one".