180875169 has 6 divisors (see below), whose sum is σ = 261264146. Its totient is φ = 120583440.

The previous prime is 180875137. The next prime is 180875207. The reversal of 180875169 is 961578081.

It can be written as a sum of positive squares in only one way, i.e., 172580769 + 8294400 = 13137^2 + 2880^2 .

It is not a de Polignac number, because 180875169 - 2⁵ = 180875137 is a prime.

It is a super-2 number, since 2×180875169² = 65431653521557122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180873169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10048612 + ... + 10048629.

Almost surely, 2^180875169 is an apocalyptic number.

It is an amenable number.

180875169 is a deficient number, since it is larger than the sum of its proper divisors (80388977).

180875169 is a wasteful number, since it uses less digits than its factorization.

180875169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20097247 (or 20097244 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 180875169 is about 13448.9839393168. The cubic root of 180875169 is about 565.5352111231.

The spelling of 180875169 in words is "one hundred eighty million, eight hundred seventy-five thousand, one hundred sixty-nine".