194548217 has 2 divisors, whose sum is σ = 194548218. Its totient is φ = 194548216.

The previous prime is 194548127. The next prime is 194548223. The reversal of 194548217 is 712845491.

Together with previous prime (194548127) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108076816 + 86471401 = 10396^2 + 9299^2 .

It is a cyclic number.

It is not a de Polignac number, because 194548217 - 2¹⁰ = 194547193 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (194548267) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97274108 + 97274109.

It is an arithmetic number, because the mean of its divisors is an integer number (97274109).

Almost surely, 2^194548217 is an apocalyptic number.

It is an amenable number.

194548217 is a deficient number, since it is larger than the sum of its proper divisors (1).

194548217 is an equidigital number, since it uses as much as digits as its factorization.

194548217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 194548217 is about 13948.0542370612. The cubic root of 194548217 is about 579.4408175812.

The spelling of 194548217 in words is "one hundred ninety-four million, five hundred forty-eight thousand, two hundred seventeen".