2168789 has 8 divisors (see below), whose sum is σ = 2529600. Its totient is φ = 1858668.

The previous prime is 2168753. The next prime is 2168797. The reversal of 2168789 is 9878612.

2168789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2168789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2819 + ... + 3504.

It is an arithmetic number, because the mean of its divisors is an integer number (316200).

2^2168789 is an apocalyptic number.

It is an amenable number.

2168789 is a deficient number, since it is larger than the sum of its proper divisors (360811).

2168789 is an frugal number, since it uses more digits than its factorization.

2168789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6344 (or 6330 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 2168789 is about 1472.6808887196. The cubic root of 2168789 is about 129.4411712343.

The spelling of 2168789 in words is "two million, one hundred sixty-eight thousand, seven hundred eighty-nine".