198834253 has 2 divisors, whose sum is σ = 198834254. Its totient is φ = 198834252.

The previous prime is 198834199. The next prime is 198834269. The reversal of 198834253 is 352438891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 195496324 + 3337929 = 13982^2 + 1827^2 .

It is a cyclic number.

It is not a de Polignac number, because 198834253 - 2¹⁷ = 198703181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (198834283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99417126 + 99417127.

It is an arithmetic number, because the mean of its divisors is an integer number (99417127).

Almost surely, 2^198834253 is an apocalyptic number.

It is an amenable number.

198834253 is a deficient number, since it is larger than the sum of its proper divisors (1).

198834253 is an equidigital number, since it uses as much as digits as its factorization.

198834253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 43.

The square root of 198834253 is about 14100.8600092335. The cubic root of 198834253 is about 583.6651112524.

The spelling of 198834253 in words is "one hundred ninety-eight million, eight hundred thirty-four thousand, two hundred fifty-three".