180189218 has 16 divisors (see below), whose sum is σ = 295061184. Its totient is φ = 81846960.

The previous prime is 180189173. The next prime is 180189227. The reversal of 180189218 is 812981081.

It is a happy number.

180189218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60971 + ... + 63857.

It is an arithmetic number, because the mean of its divisors is an integer number (18441324).

Almost surely, 2^180189218 is an apocalyptic number.

180189218 is a deficient number, since it is larger than the sum of its proper divisors (114871966).

180189218 is a wasteful number, since it uses less digits than its factorization.

180189218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737.

The product of its (nonzero) digits is 9216, while the sum is 38.

The square root of 180189218 is about 13423.4577512651. The cubic root of 180189218 is about 564.8193935492.

It can be divided in two parts, 1801 and 89218, that added together give a palindrome (91019).

The spelling of 180189218 in words is "one hundred eighty million, one hundred eighty-nine thousand, two hundred eighteen".