204634943 has 2 divisors, whose sum is σ = 204634944. Its totient is φ = 204634942.

The previous prime is 204634939. The next prime is 204634949. The reversal of 204634943 is 349436402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204634943 - 2² = 204634939 is a prime.

It is a super-2 number, since 2×204634943² = 83750919793226498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204634949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102317471 + 102317472.

It is an arithmetic number, because the mean of its divisors is an integer number (102317472).

Almost surely, 2^204634943 is an apocalyptic number.

204634943 is a deficient number, since it is larger than the sum of its proper divisors (1).

204634943 is an equidigital number, since it uses as much as digits as its factorization.

204634943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 204634943 is about 14305.0670393396. The cubic root of 204634943 is about 589.2866443090.

The spelling of 204634943 in words is "two hundred four million, six hundred thirty-four thousand, nine hundred forty-three".