168211093 has 2 divisors, whose sum is σ = 168211094. Its totient is φ = 168211092.

The previous prime is 168211091. The next prime is 168211097. The reversal of 168211093 is 390112861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155301444 + 12909649 = 12462^2 + 3593^2 .

It is an emirp because it is prime and its reverse (390112861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168211093 - 2¹ = 168211091 is a prime.

Together with 168211091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168211091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84105546 + 84105547.

It is an arithmetic number, because the mean of its divisors is an integer number (84105547).

Almost surely, 2^168211093 is an apocalyptic number.

It is an amenable number.

168211093 is a deficient number, since it is larger than the sum of its proper divisors (1).

168211093 is an equidigital number, since it uses as much as digits as its factorization.

168211093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 168211093 is about 12969.6219297249. The cubic root of 168211093 is about 552.0158455246.

The spelling of 168211093 in words is "one hundred sixty-eight million, two hundred eleven thousand, ninety-three".