198146 has 8 divisors (see below), whose sum is σ = 320124. Its totient is φ = 91440.

The previous prime is 198139. The next prime is 198173. The reversal of 198146 is 641891.

198146 = T₆₀ + T₆₁ + ... + T₁₁₁.

It can be written as a sum of positive squares in 2 ways, for example, as 198025 + 121 = 445^2 + 11^2 .

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

It is a super-3 number, since 3×198146³ = 23338728050448408, which contains 333 as substring.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 198146.

It is an unprimeable number.

198146 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 (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3785 + ... + 3836.

2¹⁹⁸¹⁴⁶ is an apocalyptic number.

198146 is a deficient number, since it is larger than the sum of its proper divisors (121978).

198146 is a wasteful number, since it uses less digits than its factorization.

198146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7636.

The product of its digits is 1728, while the sum is 29.

The square root of 198146 is about 445.1359342942. The cubic root of 198146 is about 58.2990891982.

The spelling of 198146 in words is "one hundred ninety-eight thousand, one hundred forty-six".