2194828817 has 2 divisors, whose sum is σ = 2194828818. Its totient is φ = 2194828816.

The previous prime is 2194828793. The next prime is 2194828819. The reversal of 2194828817 is 7188284912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2194828801 + 16 = 46849^2 + 4^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194828817 - 2¹⁶ = 2194763281 is a prime.

Together with 2194828819, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2194828819) 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, 1097414408 + 1097414409.

It is an arithmetic number, because the mean of its divisors is an integer number (1097414409).

Almost surely, 2^2194828817 is an apocalyptic number.

It is an amenable number.

2194828817 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194828817 is an equidigital number, since it uses as much as digits as its factorization.

2194828817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 50.

The square root of 2194828817 is about 46849.0001707614. Note that the first 3 decimals coincide. The cubic root of 2194828817 is about 1299.5716176300.

The spelling of 2194828817 in words is "two billion, one hundred ninety-four million, eight hundred twenty-eight thousand, eight hundred seventeen".