2189669867 has 8 divisors (see below), whose sum is σ = 2729978112. Its totient is φ = 1706236200.

The previous prime is 2189669861. The next prime is 2189669899. The reversal of 2189669867 is 7689669812.

2189669867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2189669867 - 2³⁰ = 1115928043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189669861) 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, 14218559 + ... + 14218712.

It is an arithmetic number, because the mean of its divisors is an integer number (341247264).

Almost surely, 2^2189669867 is an apocalyptic number.

2189669867 is a deficient number, since it is larger than the sum of its proper divisors (540308245).

2189669867 is a wasteful number, since it uses less digits than its factorization.

2189669867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28437289.

The product of its digits is 15676416, while the sum is 62.

The square root of 2189669867 is about 46793.9084390265. The cubic root of 2189669867 is about 1298.5526034914.

Subtracting 2189669867 from its reverse (7689669812), we obtain a palindrome (5499999945).

The spelling of 2189669867 in words is "two billion, one hundred eighty-nine million, six hundred sixty-nine thousand, eight hundred sixty-seven".