2189569609 has 8 divisors (see below), whose sum is σ = 2277215360. Its totient is φ = 2103422256.

The previous prime is 2189569583. The next prime is 2189569637. The reversal of 2189569609 is 9069659812.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2189569609 - 2¹⁵ = 2189536841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2189569609.

It is not an unprimeable number, because it can be changed into a prime (2189569409) 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, 371619 + ... + 377464.

It is an arithmetic number, because the mean of its divisors is an integer number (284651920).

Almost surely, 2^2189569609 is an apocalyptic number.

It is an amenable number.

2189569609 is a deficient number, since it is larger than the sum of its proper divisors (87645751).

2189569609 is an equidigital number, since it uses as much as digits as its factorization.

2189569609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749199.

The product of its (nonzero) digits is 2099520, while the sum is 55.

The square root of 2189569609 is about 46792.8371548467. The cubic root of 2189569609 is about 1298.5327843281.

The spelling of 2189569609 in words is "two billion, one hundred eighty-nine million, five hundred sixty-nine thousand, six hundred nine".