198253563 has 4 divisors (see below), whose sum is σ = 264338088. Its totient is φ = 132169040.

The previous prime is 198253519. The next prime is 198253571. The reversal of 198253563 is 365352891.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 198253563 - 2⁶ = 198253499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (198253063) 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, 33042258 + ... + 33042263.

It is an arithmetic number, because the mean of its divisors is an integer number (66084522).

Almost surely, 2^198253563 is an apocalyptic number.

198253563 is a deficient number, since it is larger than the sum of its proper divisors (66084525).

198253563 is an equidigital number, since it uses as much as digits as its factorization.

198253563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66084524.

The product of its digits is 194400, while the sum is 42.

The square root of 198253563 is about 14080.2543656001. The cubic root of 198253563 is about 583.0963645559.

The spelling of 198253563 in words is "one hundred ninety-eight million, two hundred fifty-three thousand, five hundred sixty-three".