205443193 has 2 divisors, whose sum is σ = 205443194. Its totient is φ = 205443192.

The previous prime is 205443167. The next prime is 205443197. The reversal of 205443193 is 391344502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135419769 + 70023424 = 11637^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 205443193 - 2¹³ = 205435001 is a prime.

It is not a weakly prime, because it can be changed into another prime (205443197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102721596 + 102721597.

It is an arithmetic number, because the mean of its divisors is an integer number (102721597).

Almost surely, 2^205443193 is an apocalyptic number.

It is an amenable number.

205443193 is a deficient number, since it is larger than the sum of its proper divisors (1).

205443193 is an equidigital number, since it uses as much as digits as its factorization.

205443193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 205443193 is about 14333.2896782281. The cubic root of 205443193 is about 590.0614634809.

Adding to 205443193 its reverse (391344502), we get a palindrome (596787695).

The spelling of 205443193 in words is "two hundred five million, four hundred forty-three thousand, one hundred ninety-three".