2105789 has 16 divisors (see below), whose sum is σ = 2580480. Its totient is φ = 1678320.

The previous prime is 2105767. The next prime is 2105809. The reversal of 2105789 is 9875012.

It is not a de Polignac number, because 2105789 - 2¹⁶ = 2040253 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9332 + ... + 9554.

It is an arithmetic number, because the mean of its divisors is an integer number (161280).

2^2105789 is an apocalyptic number.

It is an amenable number.

2105789 is a deficient number, since it is larger than the sum of its proper divisors (474691).

2105789 is a wasteful number, since it uses less digits than its factorization.

2105789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2105789 is about 1451.1336947366. The cubic root of 2105789 is about 128.1754795341.

The spelling of 2105789 in words is "two million, one hundred five thousand, seven hundred eighty-nine".