180505274 has 8 divisors (see below), whose sum is σ = 270824148. Its totient is φ = 90230560.

The previous prime is 180505267. The next prime is 180505279. The reversal of 180505274 is 472505081.

It can be written as a sum of positive squares in 2 ways, for example, as 169182049 + 11323225 = 13007^2 + 3365^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 180505274.

It is not an unprimeable number, because it can be changed into a prime (180505279) 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 3 ways as a sum of consecutive naturals, for example, 2504 + ... + 19164.

Almost surely, 2^180505274 is an apocalyptic number.

180505274 is a deficient number, since it is larger than the sum of its proper divisors (90318874).

180505274 is a wasteful number, since it uses less digits than its factorization.

180505274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22080.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 180505274 is about 13435.2251190667. The cubic root of 180505274 is about 565.1494360252.

The spelling of 180505274 in words is "one hundred eighty million, five hundred five thousand, two hundred seventy-four".