2189669812 has 48 divisors (see below), whose sum is σ = 4248925632. Its totient is φ = 979066880.

The previous prime is 2189669771. The next prime is 2189669827.

2189669812 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2189669812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937398 + ... + 939730.

It is an arithmetic number, because the mean of its divisors is an integer number (88519284).

Almost surely, 2^2189669812 is an apocalyptic number.

2189669812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2189669812 is a deficient number, since it is larger than the sum of its proper divisors (2059255820).

2189669812 is a wasteful number, since it uses less digits than its factorization.

2189669812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688 (or 2686 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 2189669812 is about 46793.9078513432. The cubic root of 2189669812 is about 1298.5525926191.

The spelling of 2189669812 in words is "two billion, one hundred eighty-nine million, six hundred sixty-nine thousand, eight hundred twelve".