204718949 has 2 divisors, whose sum is σ = 204718950. Its totient is φ = 204718948.

The previous prime is 204718933. The next prime is 204718951. The reversal of 204718949 is 949817402.

204718949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150062500 + 54656449 = 12250^2 + 7393^2 .

It is a cyclic number.

It is not a de Polignac number, because 204718949 - 2⁴ = 204718933 is a prime.

Together with 204718951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204718649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102359474 + 102359475.

It is an arithmetic number, because the mean of its divisors is an integer number (102359475).

Almost surely, 2^204718949 is an apocalyptic number.

It is an amenable number.

204718949 is a deficient number, since it is larger than the sum of its proper divisors (1).

204718949 is an equidigital number, since it uses as much as digits as its factorization.

204718949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 204718949 is about 14308.0029703659. The cubic root of 204718949 is about 589.3672705544.

The spelling of 204718949 in words is "two hundred four million, seven hundred eighteen thousand, nine hundred forty-nine".