204081899 has 16 divisors (see below), whose sum is σ = 241771200. Its totient is φ = 168614784.

The previous prime is 204081877. The next prime is 204081929. The reversal of 204081899 is 998180402.

It is a cyclic number.

It is not a de Polignac number, because 204081899 - 2²⁰ = 203033323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204081859) 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 in 15 ways as a sum of consecutive naturals, for example, 24617 + ... + 31845.

It is an arithmetic number, because the mean of its divisors is an integer number (15110700).

Almost surely, 2^204081899 is an apocalyptic number.

204081899 is a deficient number, since it is larger than the sum of its proper divisors (37689301).

204081899 is a wasteful number, since it uses less digits than its factorization.

204081899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 204081899 is about 14285.7236078541. The cubic root of 204081899 is about 588.7552989578.

The spelling of 204081899 in words is "two hundred four million, eighty-one thousand, eight hundred ninety-nine".