161796319 has 2 divisors, whose sum is σ = 161796320. Its totient is φ = 161796318.

The previous prime is 161796287. The next prime is 161796337. The reversal of 161796319 is 913697161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161796319 - 2⁵ = 161796287 is a prime.

It is a super-2 number, since 2×161796319² = 52356097683899522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161796359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80898159 + 80898160.

It is an arithmetic number, because the mean of its divisors is an integer number (80898160).

Almost surely, 2^161796319 is an apocalyptic number.

161796319 is a deficient number, since it is larger than the sum of its proper divisors (1).

161796319 is an equidigital number, since it uses as much as digits as its factorization.

161796319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 43.

The square root of 161796319 is about 12719.9181994225. The cubic root of 161796319 is about 544.9076172564.

The spelling of 161796319 in words is "one hundred sixty-one million, seven hundred ninety-six thousand, three hundred nineteen".