161598167 has 2 divisors, whose sum is σ = 161598168. Its totient is φ = 161598166.

The previous prime is 161598163. The next prime is 161598169. The reversal of 161598167 is 761895161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161598167 - 2² = 161598163 is a prime.

It is a super-2 number, since 2×161598167² = 52227935155519778, which contains 22 as substring.

Together with 161598169, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161598163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80799083 + 80799084.

It is an arithmetic number, because the mean of its divisors is an integer number (80799084).

Almost surely, 2^161598167 is an apocalyptic number.

161598167 is a deficient number, since it is larger than the sum of its proper divisors (1).

161598167 is an equidigital number, since it uses as much as digits as its factorization.

161598167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 161598167 is about 12712.1267693490. The cubic root of 161598167 is about 544.6850768763.

The spelling of 161598167 in words is "one hundred sixty-one million, five hundred ninety-eight thousand, one hundred sixty-seven".