198194 has 8 divisors (see below), whose sum is σ = 304668. Its totient is φ = 96640.

The previous prime is 198193. The next prime is 198197. The reversal of 198194 is 491891.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 169 = 445^2 + 13^2 .

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

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 198194.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198193) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1127 + ... + 1290.

2¹⁹⁸¹⁹⁴ is an apocalyptic number.

198194 is a deficient number, since it is larger than the sum of its proper divisors (106474).

198194 is a wasteful number, since it uses less digits than its factorization.

198194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460.

The product of its digits is 2592, while the sum is 32.

The square root of 198194 is about 445.1898471439. The cubic root of 198194 is about 58.3037963844.

The spelling of 198194 in words is "one hundred ninety-eight thousand, one hundred ninety-four".