180489145 has 16 divisors (see below), whose sum is σ = 223005888. Its totient is φ = 140132160.

The previous prime is 180489139. The next prime is 180489149. The reversal of 180489145 is 541984081.

It is not a de Polignac number, because 180489145 - 2²⁷ = 46271417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 180489098 and 180489107.

It is not an unprimeable number, because it can be changed into a prime (180489149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89842 + ... + 91828.

It is an arithmetic number, because the mean of its divisors is an integer number (13937868).

Almost surely, 2^180489145 is an apocalyptic number.

It is an amenable number.

180489145 is a deficient number, since it is larger than the sum of its proper divisors (42516743).

180489145 is a wasteful number, since it uses less digits than its factorization.

180489145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2520.

The product of its (nonzero) digits is 46080, while the sum is 40.

The square root of 180489145 is about 13434.6248552016. The cubic root of 180489145 is about 565.1326025987.

The spelling of 180489145 in words is "one hundred eighty million, four hundred eighty-nine thousand, one hundred forty-five".