168006893 has 2 divisors, whose sum is σ = 168006894. Its totient is φ = 168006892.

The previous prime is 168006877. The next prime is 168006907. The reversal of 168006893 is 398600861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127531849 + 40475044 = 11293^2 + 6362^2 .

It is an emirp because it is prime and its reverse (398600861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168006893 - 2⁴ = 168006877 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168006893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168006833) 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, 84003446 + 84003447.

It is an arithmetic number, because the mean of its divisors is an integer number (84003447).

Almost surely, 2^168006893 is an apocalyptic number.

It is an amenable number.

168006893 is a deficient number, since it is larger than the sum of its proper divisors (1).

168006893 is an equidigital number, since it uses as much as digits as its factorization.

168006893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 168006893 is about 12961.7472973361. The cubic root of 168006893 is about 551.7923817065.

The spelling of 168006893 in words is "one hundred sixty-eight million, six thousand, eight hundred ninety-three".