180986081 has 2 divisors, whose sum is σ = 180986082. Its totient is φ = 180986080.

The previous prime is 180986059. The next prime is 180986093. The reversal of 180986081 is 180689081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101687056 + 79299025 = 10084^2 + 8905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-180986081 is a prime.

It is a super-2 number, since 2×180986081² = 65511923031477122, which contains 22 as substring.

It is a Chen prime.

180986081 is a strobogrammatic number because it is the same when read upside-down.

It is not a weakly prime, because it can be changed into another prime (180986051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90493040 + 90493041.

It is an arithmetic number, because the mean of its divisors is an integer number (90493041).

Almost surely, 2^180986081 is an apocalyptic number.

It is an amenable number.

180986081 is a deficient number, since it is larger than the sum of its proper divisors (1).

180986081 is an equidigital number, since it uses as much as digits as its factorization.

180986081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 41.

The square root of 180986081 is about 13453.1067415672. The cubic root of 180986081 is about 565.6507822197.

The spelling of 180986081 in words is "one hundred eighty million, nine hundred eighty-six thousand, eighty-one".