161390179 has 2 divisors, whose sum is σ = 161390180. Its totient is φ = 161390178.

The previous prime is 161390167. The next prime is 161390183. The reversal of 161390179 is 971093161.

It is a strong prime.

It is an emirp because it is prime and its reverse (971093161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161390179 - 2¹⁵ = 161357411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (161391179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80695089 + 80695090.

It is an arithmetic number, because the mean of its divisors is an integer number (80695090).

Almost surely, 2^161390179 is an apocalyptic number.

161390179 is a deficient number, since it is larger than the sum of its proper divisors (1).

161390179 is an equidigital number, since it uses as much as digits as its factorization.

161390179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 161390179 is about 12703.9434428842. The cubic root of 161390179 is about 544.4512941138.

The spelling of 161390179 in words is "one hundred sixty-one million, three hundred ninety thousand, one hundred seventy-nine".