205489073 has 2 divisors, whose sum is σ = 205489074. Its totient is φ = 205489072.

The previous prime is 205489027. The next prime is 205489079. The reversal of 205489073 is 370984502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201980944 + 3508129 = 14212^2 + 1873^2 .

It is a cyclic number.

It is not a de Polignac number, because 205489073 - 2¹⁸ = 205226929 is a prime.

It is not a weakly prime, because it can be changed into another prime (205489079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102744536 + 102744537.

It is an arithmetic number, because the mean of its divisors is an integer number (102744537).

Almost surely, 2^205489073 is an apocalyptic number.

It is an amenable number.

205489073 is a deficient number, since it is larger than the sum of its proper divisors (1).

205489073 is an equidigital number, since it uses as much as digits as its factorization.

205489073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 205489073 is about 14334.8900588738. The cubic root of 205489073 is about 590.1053847949.

The spelling of 205489073 in words is "two hundred five million, four hundred eighty-nine thousand, seventy-three".