204634019 has 2 divisors, whose sum is σ = 204634020. Its totient is φ = 204634018.

The previous prime is 204633983. The next prime is 204634021. The reversal of 204634019 is 910436402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204634019 - 2⁸ = 204633763 is a prime.

It is a super-3 number, since 3×204634019³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 204634021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204633982 and 204634000.

It is not a weakly prime, because it can be changed into another prime (204634039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102317009 + 102317010.

It is an arithmetic number, because the mean of its divisors is an integer number (102317010).

Almost surely, 2^204634019 is an apocalyptic number.

204634019 is a deficient number, since it is larger than the sum of its proper divisors (1).

204634019 is an equidigital number, since it uses as much as digits as its factorization.

204634019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 204634019 is about 14305.0347430546. The cubic root of 204634019 is about 589.2857573610.

The spelling of 204634019 in words is "two hundred four million, six hundred thirty-four thousand, nineteen".