2194192213 has 2 divisors, whose sum is σ = 2194192214. Its totient is φ = 2194192212.

The previous prime is 2194192177. The next prime is 2194192223. The reversal of 2194192213 is 3122914912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2072707729 + 121484484 = 45527^2 + 11022^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194192213 - 2¹⁷ = 2194061141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2194192223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097096106 + 1097096107.

It is an arithmetic number, because the mean of its divisors is an integer number (1097096107).

Almost surely, 2^2194192213 is an apocalyptic number.

It is an amenable number.

2194192213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194192213 is an equidigital number, since it uses as much as digits as its factorization.

2194192213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 2194192213 is about 46842.2054668650. The cubic root of 2194192213 is about 1299.4459597680.

The spelling of 2194192213 in words is "two billion, one hundred ninety-four million, one hundred ninety-two thousand, two hundred thirteen".