204204193 has 2 divisors, whose sum is σ = 204204194. Its totient is φ = 204204192.

The previous prime is 204204179. The next prime is 204204211. The reversal of 204204193 is 391402402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176145984 + 28058209 = 13272^2 + 5297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204204193 is a prime.

It is not a weakly prime, because it can be changed into another prime (204204103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102102096 + 102102097.

It is an arithmetic number, because the mean of its divisors is an integer number (102102097).

Almost surely, 2^204204193 is an apocalyptic number.

It is an amenable number.

204204193 is a deficient number, since it is larger than the sum of its proper divisors (1).

204204193 is an equidigital number, since it uses as much as digits as its factorization.

204204193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 204204193 is about 14290.0032540234. The cubic root of 204204193 is about 588.8728773477.

Adding to 204204193 its reverse (391402402), we get a palindrome (595606595).

The spelling of 204204193 in words is "two hundred four million, two hundred four thousand, one hundred ninety-three".