180038489 has 2 divisors, whose sum is σ = 180038490. Its totient is φ = 180038488.

The previous prime is 180038437. The next prime is 180038519. The reversal of 180038489 is 984830081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137358400 + 42680089 = 11720^2 + 6533^2 .

It is an emirp because it is prime and its reverse (984830081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 180038489 - 2⁸ = 180038233 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (180038429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90019244 + 90019245.

It is an arithmetic number, because the mean of its divisors is an integer number (90019245).

Almost surely, 2^180038489 is an apocalyptic number.

It is an amenable number.

180038489 is a deficient number, since it is larger than the sum of its proper divisors (1).

180038489 is an equidigital number, since it uses as much as digits as its factorization.

180038489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 180038489 is about 13417.8421886680. The cubic root of 180038489 is about 564.6618583891.

The spelling of 180038489 in words is "one hundred eighty million, thirty-eight thousand, four hundred eighty-nine".