208224193 has 2 divisors, whose sum is σ = 208224194. Its totient is φ = 208224192.

The previous prime is 208224169. The next prime is 208224223. The reversal of 208224193 is 391422802.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184633744 + 23590449 = 13588^2 + 4857^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208224193 is a prime.

It is not a weakly prime, because it can be changed into another prime (208224113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104112096 + 104112097.

It is an arithmetic number, because the mean of its divisors is an integer number (104112097).

Almost surely, 2^208224193 is an apocalyptic number.

It is an amenable number.

208224193 is a deficient number, since it is larger than the sum of its proper divisors (1).

208224193 is an equidigital number, since it uses as much as digits as its factorization.

208224193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 208224193 is about 14429.9755024047. The cubic root of 208224193 is about 592.7120125270.

Adding to 208224193 its reverse (391422802), we get a palindrome (599646995).

The spelling of 208224193 in words is "two hundred eight million, two hundred twenty-four thousand, one hundred ninety-three".