189518 has 8 divisors (see below), whose sum is σ = 324912. Its totient is φ = 81216.

The previous prime is 189517. The next prime is 189523. The reversal of 189518 is 815981.

It is a happy number.

189518 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6755 + ... + 6782.

It is an arithmetic number, because the mean of its divisors is an integer number (40614).

2¹⁸⁹⁵¹⁸ is an apocalyptic number.

189518 is a deficient number, since it is larger than the sum of its proper divisors (135394).

189518 is a wasteful number, since it uses less digits than its factorization.

189518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13546.

The product of its digits is 2880, while the sum is 32.

The square root of 189518 is about 435.3366513401. The cubic root of 189518 is about 57.4403161426.

It can be divided in two parts, 189 and 518, that added together give a palindrome (707).

The spelling of 189518 in words is "one hundred eighty-nine thousand, five hundred eighteen".