198333953 has 2 divisors, whose sum is σ = 198333954. Its totient is φ = 198333952.

The previous prime is 198333943. The next prime is 198333959. The reversal of 198333953 is 359333891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143233024 + 55100929 = 11968^2 + 7423^2 .

It is a cyclic number.

It is not a de Polignac number, because 198333953 - 2¹⁰ = 198332929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (198333959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99166976 + 99166977.

It is an arithmetic number, because the mean of its divisors is an integer number (99166977).

Almost surely, 2^198333953 is an apocalyptic number.

It is an amenable number.

198333953 is a deficient number, since it is larger than the sum of its proper divisors (1).

198333953 is an equidigital number, since it uses as much as digits as its factorization.

198333953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 262440, while the sum is 44.

The square root of 198333953 is about 14083.1087832197. The cubic root of 198333953 is about 583.1751673135.

The spelling of 198333953 in words is "one hundred ninety-eight million, three hundred thirty-three thousand, nine hundred fifty-three".