211494193 has 2 divisors, whose sum is σ = 211494194. Its totient is φ = 211494192.

The previous prime is 211494169. The next prime is 211494203. The reversal of 211494193 is 391494112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 181387024 + 30107169 = 13468^2 + 5487^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211494193 is a prime.

It is equal to p_11679541 and since 211494193 and 11679541 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (211494103) 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, 105747096 + 105747097.

It is an arithmetic number, because the mean of its divisors is an integer number (105747097).

Almost surely, 2^211494193 is an apocalyptic number.

It is an amenable number.

211494193 is a deficient number, since it is larger than the sum of its proper divisors (1).

211494193 is an equidigital number, since it uses as much as digits as its factorization.

211494193 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 211494193 is about 14542.8399221060. The cubic root of 211494193 is about 595.7986056253.

The spelling of 211494193 in words is "two hundred eleven million, four hundred ninety-four thousand, one hundred ninety-three".