180789169 has 16 divisors (see below), whose sum is σ = 209485440. Its totient is φ = 154197760.

The previous prime is 180789163. The next prime is 180789181. The reversal of 180789169 is 961987081.

It is a cyclic number.

It is not a de Polignac number, because 180789169 - 2⁵ = 180789137 is a prime.

It is a super-2 number, since 2×180789169² = 65369447255421122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (180789163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65787 + ... + 68479.

It is an arithmetic number, because the mean of its divisors is an integer number (13092840).

Almost surely, 2^180789169 is an apocalyptic number.

It is an amenable number.

180789169 is a deficient number, since it is larger than the sum of its proper divisors (28696271).

180789169 is a wasteful number, since it uses less digits than its factorization.

180789169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 180789169 is about 13445.7862916231. The cubic root of 180789169 is about 565.4455659851.

The spelling of 180789169 in words is "one hundred eighty million, seven hundred eighty-nine thousand, one hundred sixty-nine".