198188 has 6 divisors (see below), whose sum is σ = 346836. Its totient is φ = 99092.

The previous prime is 198179. The next prime is 198193. The reversal of 198188 is 881891.

198188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

198188 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24770 + ... + 24777.

It is an arithmetic number, because the mean of its divisors is an integer number (57806).

2¹⁹⁸¹⁸⁸ is an apocalyptic number.

It is an amenable number.

198188 is a deficient number, since it is larger than the sum of its proper divisors (148648).

198188 is a wasteful number, since it uses less digits than its factorization.

198188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49551 (or 49549 counting only the distinct ones).

The product of its digits is 4608, while the sum is 35.

The square root of 198188 is about 445.1831083947. The cubic root of 198188 is about 58.3032080277.

It can be divided in two parts, 1 and 98188, that added together give a palindrome (98189).

The spelling of 198188 in words is "one hundred ninety-eight thousand, one hundred eighty-eight".