204198563 has 2 divisors, whose sum is σ = 204198564. Its totient is φ = 204198562.

The previous prime is 204198521. The next prime is 204198619. The reversal of 204198563 is 365891402.

It is a happy number.

204198563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204198563 - 2⁶ = 204198499 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (204198763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102099281 + 102099282.

It is an arithmetic number, because the mean of its divisors is an integer number (102099282).

Almost surely, 2^204198563 is an apocalyptic number.

204198563 is a deficient number, since it is larger than the sum of its proper divisors (1).

204198563 is an equidigital number, since it uses as much as digits as its factorization.

204198563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 204198563 is about 14289.8062618078. The cubic root of 204198563 is about 588.8674654693.

It can be divided in two parts, 20419 and 8563, that added together give a palindrome (28982).

The spelling of 204198563 in words is "two hundred four million, one hundred ninety-eight thousand, five hundred sixty-three".