198383 has 4 divisors (see below), whose sum is σ = 199368. Its totient is φ = 197400.

The previous prime is 198377. The next prime is 198391. The reversal of 198383 is 383891.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 198383 - 2⁸ = 198127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68 + ... + 633.

It is an arithmetic number, because the mean of its divisors is an integer number (49842).

2¹⁹⁸³⁸³ is an apocalyptic number.

198383 is a deficient number, since it is larger than the sum of its proper divisors (985).

198383 is an equidigital number, since it uses as much as digits as its factorization.

198383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 984.

The product of its digits is 5184, while the sum is 32.

The square root of 198383 is about 445.4020655543. The cubic root of 198383 is about 58.3223235457.

The spelling of 198383 in words is "one hundred ninety-eight thousand, three hundred eighty-three".