180081361 has 2 divisors, whose sum is σ = 180081362. Its totient is φ = 180081360.

The previous prime is 180081313. The next prime is 180081371. The reversal of 180081361 is 163180081.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117592336 + 62489025 = 10844^2 + 7905^2 .

It is a cyclic number.

It is not a de Polignac number, because 180081361 - 2⁷ = 180081233 is a prime.

It is a super-2 number, since 2×180081361² = 64858593159224642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (180081371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90040680 + 90040681.

It is an arithmetic number, because the mean of its divisors is an integer number (90040681).

Almost surely, 2^180081361 is an apocalyptic number.

It is an amenable number.

180081361 is a deficient number, since it is larger than the sum of its proper divisors (1).

180081361 is an equidigital number, since it uses as much as digits as its factorization.

180081361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 28.

The square root of 180081361 is about 13419.4396678848. The cubic root of 180081361 is about 564.7066752170.

The spelling of 180081361 in words is "one hundred eighty million, eighty-one thousand, three hundred sixty-one".