204885813 has 8 divisors (see below), whose sum is σ = 298015776. Its totient is φ = 124173200.

The previous prime is 204885781. The next prime is 204885833. The reversal of 204885813 is 318588402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204885813 - 2⁵ = 204885781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204885833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3104298 + ... + 3104363.

It is an arithmetic number, because the mean of its divisors is an integer number (37251972).

Almost surely, 2^204885813 is an apocalyptic number.

It is an amenable number.

204885813 is a deficient number, since it is larger than the sum of its proper divisors (93129963).

204885813 is a wasteful number, since it uses less digits than its factorization.

204885813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6208675.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 204885813 is about 14313.8329248318. The cubic root of 204885813 is about 589.5273558373.

The spelling of 204885813 in words is "two hundred four million, eight hundred eighty-five thousand, eight hundred thirteen".