204938171 has 2 divisors, whose sum is σ = 204938172. Its totient is φ = 204938170.

The previous prime is 204938159. The next prime is 204938221. The reversal of 204938171 is 171839402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204938171 - 2¹⁸ = 204676027 is a prime.

It is not a weakly prime, because it can be changed into another prime (204938141) 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, 102469085 + 102469086.

It is an arithmetic number, because the mean of its divisors is an integer number (102469086).

Almost surely, 2^204938171 is an apocalyptic number.

204938171 is a deficient number, since it is larger than the sum of its proper divisors (1).

204938171 is an equidigital number, since it uses as much as digits as its factorization.

204938171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 204938171 is about 14315.6617381105. The cubic root of 204938171 is about 589.5775689193.

The spelling of 204938171 in words is "two hundred four million, nine hundred thirty-eight thousand, one hundred seventy-one".