180695824489 has 2 divisors, whose sum is σ = 180695824490. Its totient is φ = 180695824488.

The previous prime is 180695824483. The next prime is 180695824513. The reversal of 180695824489 is 984428596081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 179105011264 + 1590813225 = 423208^2 + 39885^2 .

It is a cyclic number.

It is not a de Polignac number, because 180695824489 - 2⁵ = 180695824457 is a prime.

It is a super-2 number, since 2×180695824489² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 180695824489.

It is not a weakly prime, because it can be changed into another prime (180695824483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90347912244 + 90347912245.

It is an arithmetic number, because the mean of its divisors is an integer number (90347912245).

Almost surely, 2^180695824489 is an apocalyptic number.

It is an amenable number.

180695824489 is a deficient number, since it is larger than the sum of its proper divisors (1).

180695824489 is an equidigital number, since it uses as much as digits as its factorization.

180695824489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39813120, while the sum is 64.

The spelling of 180695824489 in words is "one hundred eighty billion, six hundred ninety-five million, eight hundred twenty-four thousand, four hundred eighty-nine".