198549 has 12 divisors (see below), whose sum is σ = 309036. Its totient is φ = 122112.

The previous prime is 198533. The next prime is 198553. The reversal of 198549 is 945891.

198549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 119025 + 79524 = 345^2 + 282^2 .

It is not a de Polignac number, because 198549 - 2⁴ = 198533 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 732 + ... + 965.

It is an arithmetic number, because the mean of its divisors is an integer number (25753).

2¹⁹⁸⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

198549 is a deficient number, since it is larger than the sum of its proper divisors (110487).

198549 is a wasteful number, since it uses less digits than its factorization.

198549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1713 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 198549 is about 445.5883750728. The cubic root of 198549 is about 58.3385863750.

It can be divided in two parts, 198 and 549, that added together give a palindrome (747).

The spelling of 198549 in words is "one hundred ninety-eight thousand, five hundred forty-nine".