161084089 has 2 divisors, whose sum is σ = 161084090. Its totient is φ = 161084088.

The previous prime is 161084059. The next prime is 161084167. The reversal of 161084089 is 980480161.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127351225 + 33732864 = 11285^2 + 5808^2 .

It is a cyclic number.

It is not a de Polignac number, because 161084089 - 2⁵ = 161084057 is a prime.

It is not a weakly prime, because it can be changed into another prime (161084059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80542044 + 80542045.

It is an arithmetic number, because the mean of its divisors is an integer number (80542045).

Almost surely, 2^161084089 is an apocalyptic number.

It is an amenable number.

161084089 is a deficient number, since it is larger than the sum of its proper divisors (1).

161084089 is an equidigital number, since it uses as much as digits as its factorization.

161084089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 161084089 is about 12691.8906786972. The cubic root of 161084089 is about 544.1068771141.

The spelling of 161084089 in words is "one hundred sixty-one million, eighty-four thousand, eighty-nine".