2106809589 has 8 divisors (see below), whose sum is σ = 2812822912. Its totient is φ = 1402668000.

The previous prime is 2106809587. The next prime is 2106809633. The reversal of 2106809589 is 9859086012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2106809589 - 2¹ = 2106809587 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 (2106809581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465304 + ... + 469809.

It is an arithmetic number, because the mean of its divisors is an integer number (351602864).

Almost surely, 2^2106809589 is an apocalyptic number.

It is an amenable number.

2106809589 is a deficient number, since it is larger than the sum of its proper divisors (706013323).

2106809589 is an equidigital number, since it uses as much as digits as its factorization.

2106809589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935867.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 2106809589 is about 45899.9955228756. The cubic root of 2106809589 is about 1281.9618331093.

The spelling of 2106809589 in words is "two billion, one hundred six million, eight hundred nine thousand, five hundred eighty-nine".