205765163 has 2 divisors, whose sum is σ = 205765164. Its totient is φ = 205765162.

The previous prime is 205765141. The next prime is 205765207. The reversal of 205765163 is 361567502.

205765163 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205765163 - 2⁶ = 205765099 is a prime.

It is not a weakly prime, because it can be changed into another prime (205765463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102882581 + 102882582.

It is an arithmetic number, because the mean of its divisors is an integer number (102882582).

Almost surely, 2^205765163 is an apocalyptic number.

205765163 is a deficient number, since it is larger than the sum of its proper divisors (1).

205765163 is an equidigital number, since it uses as much as digits as its factorization.

205765163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 205765163 is about 14344.5168269970. The cubic root of 205765163 is about 590.3695501536.

The spelling of 205765163 in words is "two hundred five million, seven hundred sixty-five thousand, one hundred sixty-three".