842161613 has 2 divisors, whose sum is σ = 842161614. Its totient is φ = 842161612.

The previous prime is 842161609. The next prime is 842161667. The reversal of 842161613 is 316161248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687855529 + 154306084 = 26227^2 + 12422^2 .

It is a cyclic number.

It is not a de Polignac number, because 842161613 - 2² = 842161609 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 842161613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842161673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421080806 + 421080807.

It is an arithmetic number, because the mean of its divisors is an integer number (421080807).

Almost surely, 2^842161613 is an apocalyptic number.

It is an amenable number.

842161613 is a deficient number, since it is larger than the sum of its proper divisors (1).

842161613 is an equidigital number, since it uses as much as digits as its factorization.

842161613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6912, while the sum is 32.

The square root of 842161613 is about 29020.0208993722. The cubic root of 842161613 is about 944.3474542854.

The spelling of 842161613 in words is "eight hundred forty-two million, one hundred sixty-one thousand, six hundred thirteen".