204612049 has 2 divisors, whose sum is σ = 204612050. Its totient is φ = 204612048.

The previous prime is 204612047. The next prime is 204612053. The reversal of 204612049 is 940216402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134722449 + 69889600 = 11607^2 + 8360^2 .

It is a cyclic number.

It is not a de Polignac number, because 204612049 - 2¹ = 204612047 is a prime.

Together with 204612047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (204612047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102306024 + 102306025.

It is an arithmetic number, because the mean of its divisors is an integer number (102306025).

Almost surely, 2^204612049 is an apocalyptic number.

It is an amenable number.

204612049 is a deficient number, since it is larger than the sum of its proper divisors (1).

204612049 is an equidigital number, since it uses as much as digits as its factorization.

204612049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 204612049 is about 14304.2668109903. The cubic root of 204612049 is about 589.2646675612.

It can be divided in two parts, 2046120 and 49, that multiplied together give a triangular number (100259880 = T₁₄₁₆₀).

The spelling of 204612049 in words is "two hundred four million, six hundred twelve thousand, forty-nine".