204195923 has 2 divisors, whose sum is σ = 204195924. Its totient is φ = 204195922.

The previous prime is 204195917. The next prime is 204196033. The reversal of 204195923 is 329591402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204195923 - 2²⁶ = 137087059 is a prime.

It is not a weakly prime, because it can be changed into another prime (204135923) 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, 102097961 + 102097962.

It is an arithmetic number, because the mean of its divisors is an integer number (102097962).

Almost surely, 2^204195923 is an apocalyptic number.

204195923 is a deficient number, since it is larger than the sum of its proper divisors (1).

204195923 is an equidigital number, since it uses as much as digits as its factorization.

204195923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 204195923 is about 14289.7138879685. The cubic root of 204195923 is about 588.8649277159.

The spelling of 204195923 in words is "two hundred four million, one hundred ninety-five thousand, nine hundred twenty-three".