204919061 has 8 divisors (see below), whose sum is σ = 210751800. Its totient is φ = 199101888.

The previous prime is 204919049. The next prime is 204919063. The reversal of 204919061 is 160919402.

It can be written as a sum of positive squares in 4 ways, for example, as 110460100 + 94458961 = 10510^2 + 9719^2 .

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 204919061 - 2¹⁰ = 204918037 is a prime.

It is a super-2 number, since 2×204919061² = 83983643122243442, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204919063) 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 7 ways as a sum of consecutive naturals, for example, 26015 + ... + 32963.

It is an arithmetic number, because the mean of its divisors is an integer number (26343975).

Almost surely, 2^204919061 is an apocalyptic number.

It is an amenable number.

204919061 is a deficient number, since it is larger than the sum of its proper divisors (5832739).

204919061 is an equidigital number, since it uses as much as digits as its factorization.

204919061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7783.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 204919061 is about 14314.9942717418. The cubic root of 204919061 is about 589.5592427781.

The spelling of 204919061 in words is "two hundred four million, nine hundred nineteen thousand, sixty-one".