204049081 has 12 divisors (see below), whose sum is σ = 210178800. Its totient is φ = 198034968.

The previous prime is 204049073. The next prime is 204049121. The reversal of 204049081 is 180940402.

It is not a de Polignac number, because 204049081 - 2³ = 204049073 is a prime.

It is a super-2 number, since 2×204049081² = 83272054913889122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204041081) 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 11 ways as a sum of consecutive naturals, for example, 1139850 + ... + 1140028.

It is an arithmetic number, because the mean of its divisors is an integer number (17514900).

Almost surely, 2^204049081 is an apocalyptic number.

It is an amenable number.

204049081 is a deficient number, since it is larger than the sum of its proper divisors (6129719).

204049081 is an equidigital number, since it uses as much as digits as its factorization.

204049081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 377 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 204049081 is about 14284.5749324227. The cubic root of 204049081 is about 588.7237384139.

Adding to 204049081 its reverse (180940402), we get a palindrome (384989483).

The spelling of 204049081 in words is "two hundred four million, forty-nine thousand, eighty-one".