198183 has 8 divisors (see below), whose sum is σ = 272896. Its totient is φ = 127800.

The previous prime is 198179. The next prime is 198193. The reversal of 198183 is 381891.

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

It is not a de Polignac number, because 198183 - 2² = 198179 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 973 + ... + 1158.

It is an arithmetic number, because the mean of its divisors is an integer number (34112).

2¹⁹⁸¹⁸³ is an apocalyptic number.

198183 is a deficient number, since it is larger than the sum of its proper divisors (74713).

198183 is a wasteful number, since it uses less digits than its factorization.

198183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2165.

The product of its digits is 1728, while the sum is 30.

The square root of 198183 is about 445.1774926925. The cubic root of 198183 is about 58.3027177214.

The spelling of 198183 in words is "one hundred ninety-eight thousand, one hundred eighty-three".