361399613 has 2 divisors, whose sum is σ = 361399614. Its totient is φ = 361399612.

The previous prime is 361399607. The next prime is 361399639. The reversal of 361399613 is 316993163.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 358079929 + 3319684 = 18923^2 + 1822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361399613 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361399673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180699806 + 180699807.

It is an arithmetic number, because the mean of its divisors is an integer number (180699807).

Almost surely, 2^361399613 is an apocalyptic number.

It is an amenable number.

361399613 is a deficient number, since it is larger than the sum of its proper divisors (1).

361399613 is an equidigital number, since it uses as much as digits as its factorization.

361399613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 78732, while the sum is 41.

The square root of 361399613 is about 19010.5132229511. The cubic root of 361399613 is about 712.2993713559.

The spelling of 361399613 in words is "three hundred sixty-one million, three hundred ninety-nine thousand, six hundred thirteen".