198293 has 4 divisors (see below), whose sum is σ = 202560. Its totient is φ = 194028.

The previous prime is 198281. The next prime is 198301. The reversal of 198293 is 392891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392891 = 43 ⋅9137.

It is a cyclic number.

It is not a de Polignac number, because 198293 - 2⁴ = 198277 is a prime.

It is a super-2 number, since 2×198293² = 78640227698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198223) 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, 2063 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (50640).

2¹⁹⁸²⁹³ is an apocalyptic number.

It is an amenable number.

198293 is a deficient number, since it is larger than the sum of its proper divisors (4267).

198293 is an equidigital number, since it uses as much as digits as its factorization.

198293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4266.

The product of its digits is 3888, while the sum is 32.

The square root of 198293 is about 445.3010217819. The cubic root of 198293 is about 58.3135025562.

The spelling of 198293 in words is "one hundred ninety-eight thousand, two hundred ninety-three".