161149 has 2 divisors, whose sum is σ = 161150. Its totient is φ = 161148.

The previous prime is 161141. The next prime is 161159. The reversal of 161149 is 941161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101124 + 60025 = 318^2 + 245^2 .

It is a cyclic number.

It is not a de Polignac number, because 161149 - 2³ = 161141 is a prime.

It is a Chen prime.

It is equal to p₁₄₇₈₂ and since 161149 and 14782 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80574 + 80575.

It is an arithmetic number, because the mean of its divisors is an integer number (80575).

2¹⁶¹¹⁴⁹ is an apocalyptic number.

It is an amenable number.

161149 is a deficient number, since it is larger than the sum of its proper divisors (1).

161149 is an equidigital number, since it uses as much as digits as its factorization.

161149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 161149 is about 401.4336806996. The cubic root of 161149 is about 54.4179952361.

The spelling of 161149 in words is "one hundred sixty-one thousand, one hundred forty-nine".