2168851 has 2 divisors, whose sum is σ = 2168852. Its totient is φ = 2168850.

The previous prime is 2168827. The next prime is 2168861. The reversal of 2168851 is 1588612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2168851 - 2⁵ = 2168819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2168801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084425 + 1084426.

It is an arithmetic number, because the mean of its divisors is an integer number (1084426).

2^2168851 is an apocalyptic number.

2168851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168851 is an equidigital number, since it uses as much as digits as its factorization.

2168851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 31.

The square root of 2168851 is about 1472.7019386149. The cubic root of 2168851 is about 129.4424046839.

The spelling of 2168851 in words is "two million, one hundred sixty-eight thousand, eight hundred fifty-one".