1318913441 has 2 divisors, whose sum is σ = 1318913442. Its totient is φ = 1318913440.

The previous prime is 1318913381. The next prime is 1318913459. The reversal of 1318913441 is 1443198131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1179579025 + 139334416 = 34345^2 + 11804^2 .

It is a cyclic number.

It is not a de Polignac number, because 1318913441 - 2¹⁸ = 1318651297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1318213441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659456720 + 659456721.

It is an arithmetic number, because the mean of its divisors is an integer number (659456721).

Almost surely, 2^1318913441 is an apocalyptic number.

It is an amenable number.

1318913441 is a deficient number, since it is larger than the sum of its proper divisors (1).

1318913441 is an equidigital number, since it uses as much as digits as its factorization.

1318913441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 1318913441 is about 36316.8478946067. The cubic root of 1318913441 is about 1096.6602396846.

The spelling of 1318913441 in words is "one billion, three hundred eighteen million, nine hundred thirteen thousand, four hundred forty-one".