2189740089 has 4 divisors (see below), whose sum is σ = 2919653456. Its totient is φ = 1459826724.

The previous prime is 2189740057. The next prime is 2189740129. The reversal of 2189740089 is 9800479812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2189740089 - 2⁵ = 2189740057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189740009) 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 3 ways as a sum of consecutive naturals, for example, 364956679 + ... + 364956684.

It is an arithmetic number, because the mean of its divisors is an integer number (729913364).

Almost surely, 2^2189740089 is an apocalyptic number.

It is an amenable number.

2189740089 is a deficient number, since it is larger than the sum of its proper divisors (729913367).

2189740089 is an equidigital number, since it uses as much as digits as its factorization.

2189740089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729913366.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 2189740089 is about 46794.6587657181. The cubic root of 2189740089 is about 1298.5664847294.

The spelling of 2189740089 in words is "two billion, one hundred eighty-nine million, seven hundred forty thousand, eighty-nine".