180560161 has 2 divisors, whose sum is σ = 180560162. Its totient is φ = 180560160.

The previous prime is 180560099. The next prime is 180560167. The reversal of 180560161 is 161065081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180096400 + 463761 = 13420^2 + 681^2 .

It is an emirp because it is prime and its reverse (161065081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180560161 - 2²³ = 172171553 is a prime.

It is not a weakly prime, because it can be changed into another prime (180560167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90280080 + 90280081.

It is an arithmetic number, because the mean of its divisors is an integer number (90280081).

Almost surely, 2^180560161 is an apocalyptic number.

It is an amenable number.

180560161 is a deficient number, since it is larger than the sum of its proper divisors (1).

180560161 is an equidigital number, since it uses as much as digits as its factorization.

180560161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 180560161 is about 13437.2676165953. The cubic root of 180560161 is about 565.2067126777.

The spelling of 180560161 in words is "one hundred eighty million, five hundred sixty thousand, one hundred sixty-one".