161892713 has 2 divisors, whose sum is σ = 161892714. Its totient is φ = 161892712.

The previous prime is 161892671. The next prime is 161892737. The reversal of 161892713 is 317298161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152571904 + 9320809 = 12352^2 + 3053^2 .

It is a cyclic number.

It is not a de Polignac number, because 161892713 - 2⁸ = 161892457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161891713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80946356 + 80946357.

It is an arithmetic number, because the mean of its divisors is an integer number (80946357).

Almost surely, 2^161892713 is an apocalyptic number.

It is an amenable number.

161892713 is a deficient number, since it is larger than the sum of its proper divisors (1).

161892713 is an equidigital number, since it uses as much as digits as its factorization.

161892713 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 38.

The square root of 161892713 is about 12723.7067319237. The cubic root of 161892713 is about 545.0158096584.

The spelling of 161892713 in words is "one hundred sixty-one million, eight hundred ninety-two thousand, seven hundred thirteen".