368618513 has 2 divisors, whose sum is σ = 368618514. Its totient is φ = 368618512.

The previous prime is 368618483. The next prime is 368618519. The reversal of 368618513 is 315816863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 367757329 + 861184 = 19177^2 + 928^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-368618513 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 (368618519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184309256 + 184309257.

It is an arithmetic number, because the mean of its divisors is an integer number (184309257).

Almost surely, 2^368618513 is an apocalyptic number.

It is an amenable number.

368618513 is a deficient number, since it is larger than the sum of its proper divisors (1).

368618513 is an equidigital number, since it uses as much as digits as its factorization.

368618513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 41.

The square root of 368618513 is about 19199.4404345543. The cubic root of 368618513 is about 717.0108280523.

The spelling of 368618513 in words is "three hundred sixty-eight million, six hundred eighteen thousand, five hundred thirteen".