216069193 has 2 divisors, whose sum is σ = 216069194. Its totient is φ = 216069192.

The previous prime is 216069157. The next prime is 216069223. The reversal of 216069193 is 391960612.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174556944 + 41512249 = 13212^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 216069193 - 2²¹ = 213972041 is a prime.

It is not a weakly prime, because it can be changed into another prime (216069103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108034596 + 108034597.

It is an arithmetic number, because the mean of its divisors is an integer number (108034597).

Almost surely, 2^216069193 is an apocalyptic number.

It is an amenable number.

216069193 is a deficient number, since it is larger than the sum of its proper divisors (1).

216069193 is an equidigital number, since it uses as much as digits as its factorization.

216069193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 216069193 is about 14699.2922618744. The cubic root of 216069193 is about 600.0640607527.

The spelling of 216069193 in words is "two hundred sixteen million, sixty-nine thousand, one hundred ninety-three".