161422159 has 2 divisors, whose sum is σ = 161422160. Its totient is φ = 161422158.

The previous prime is 161422147. The next prime is 161422169. The reversal of 161422159 is 951224161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161422159 - 2⁵ = 161422127 is a prime.

It is a super-2 number, since 2×161422159² = 52114226832442562, which contains 22 as substring.

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 161422159.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161422109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80711079 + 80711080.

It is an arithmetic number, because the mean of its divisors is an integer number (80711080).

Almost surely, 2^161422159 is an apocalyptic number.

161422159 is a deficient number, since it is larger than the sum of its proper divisors (1).

161422159 is an equidigital number, since it uses as much as digits as its factorization.

161422159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 161422159 is about 12705.2020448319. The cubic root of 161422159 is about 544.4872533495.

The spelling of 161422159 in words is "one hundred sixty-one million, four hundred twenty-two thousand, one hundred fifty-nine".