204956419 has 2 divisors, whose sum is σ = 204956420. Its totient is φ = 204956418.

The previous prime is 204956399. The next prime is 204956449. The reversal of 204956419 is 914659402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204956419 - 2⁷ = 204956291 is a prime.

It is a super-2 number, since 2×204956419² = 84014267378607122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (204956449) 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, 102478209 + 102478210.

It is an arithmetic number, because the mean of its divisors is an integer number (102478210).

Almost surely, 2^204956419 is an apocalyptic number.

204956419 is a deficient number, since it is larger than the sum of its proper divisors (1).

204956419 is an equidigital number, since it uses as much as digits as its factorization.

204956419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 204956419 is about 14316.2990678457. The cubic root of 204956419 is about 589.5950673549.

The spelling of 204956419 in words is "two hundred four million, nine hundred fifty-six thousand, four hundred nineteen".