361161613 has 2 divisors, whose sum is σ = 361161614. Its totient is φ = 361161612.

The previous prime is 361161599. The next prime is 361161667. The reversal of 361161613 is 316161163.

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., 321054724 + 40106889 = 17918^2 + 6333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361161613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361161683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180580806 + 180580807.

It is an arithmetic number, because the mean of its divisors is an integer number (180580807).

Almost surely, 2^361161613 is an apocalyptic number.

It is an amenable number.

361161613 is a deficient number, since it is larger than the sum of its proper divisors (1).

361161613 is an equidigital number, since it uses as much as digits as its factorization.

361161613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 28.

The square root of 361161613 is about 19004.2524977964. The cubic root of 361161613 is about 712.1429752485.

The spelling of 361161613 in words is "three hundred sixty-one million, one hundred sixty-one thousand, six hundred thirteen".