189118 has 4 divisors (see below), whose sum is σ = 283680. Its totient is φ = 94558.

The previous prime is 189067. The next prime is 189127. The reversal of 189118 is 811981.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47278 + ... + 47281.

It is an arithmetic number, because the mean of its divisors is an integer number (70920).

2¹⁸⁹¹¹⁸ is an apocalyptic number.

189118 is a deficient number, since it is larger than the sum of its proper divisors (94562).

189118 is an equidigital number, since it uses as much as digits as its factorization.

189118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94561.

The product of its digits is 576, while the sum is 28.

The square root of 189118 is about 434.8769941029. The cubic root of 189118 is about 57.3998761667.

The spelling of 189118 in words is "one hundred eighty-nine thousand, one hundred eighteen".