613942361 has 2 divisors, whose sum is σ = 613942362. Its totient is φ = 613942360.

The previous prime is 613942349. The next prime is 613942379. The reversal of 613942361 is 163249316.

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., 368832025 + 245110336 = 19205^2 + 15656^2 .

It is a cyclic number.

It is not a de Polignac number, because 613942361 - 2¹⁸ = 613680217 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (613942561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306971180 + 306971181.

It is an arithmetic number, because the mean of its divisors is an integer number (306971181).

Almost surely, 2^613942361 is an apocalyptic number.

It is an amenable number.

613942361 is a deficient number, since it is larger than the sum of its proper divisors (1).

613942361 is an equidigital number, since it uses as much as digits as its factorization.

613942361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 613942361 is about 24777.8602990654. The cubic root of 613942361 is about 849.9157291311.

The spelling of 613942361 in words is "six hundred thirteen million, nine hundred forty-two thousand, three hundred sixty-one".