198074263 has 4 divisors (see below), whose sum is σ = 204904440. Its totient is φ = 191244088.

The previous prime is 198074207. The next prime is 198074287. The reversal of 198074263 is 362470891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362470891 = 113 ⋅3207707.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198074263 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198074203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3415045 + ... + 3415102.

It is an arithmetic number, because the mean of its divisors is an integer number (51226110).

Almost surely, 2^198074263 is an apocalyptic number.

198074263 is a deficient number, since it is larger than the sum of its proper divisors (6830177).

198074263 is an equidigital number, since it uses as much as digits as its factorization.

198074263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6830176.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 198074263 is about 14073.8858528837. The cubic root of 198074263 is about 582.9205279313.

The spelling of 198074263 in words is "one hundred ninety-eight million, seventy-four thousand, two hundred sixty-three".