198133 has 4 divisors (see below), whose sum is σ = 213388. Its totient is φ = 182880.

The previous prime is 198127. The next prime is 198139. The reversal of 198133 is 331891.

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

It is an interprime number because it is at equal distance from previous prime (198127) and next prime (198139).

It can be written as a sum of positive squares in 2 ways, for example, as 91204 + 106929 = 302^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 198133 - 2⁹ = 197621 is a prime.

It is a super-3 number, since 3×198133³ = 23334134716855911, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198098 and 198107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198139) 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, 7608 + ... + 7633.

It is an arithmetic number, because the mean of its divisors is an integer number (53347).

2¹⁹⁸¹³³ is an apocalyptic number.

198133 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

198133 is a deficient number, since it is larger than the sum of its proper divisors (15255).

198133 is a wasteful number, since it uses less digits than its factorization.

198133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15254.

The product of its digits is 648, while the sum is 25.

The square root of 198133 is about 445.1213317737. The cubic root of 198133 is about 58.2978142045.

The spelling of 198133 in words is "one hundred ninety-eight thousand, one hundred thirty-three".