2189874066 has 16 divisors (see below), whose sum is σ = 4380312288. Its totient is φ = 729864000.

The previous prime is 2189874061. The next prime is 2189874077. The reversal of 2189874066 is 6604789812.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2189874061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40266 + ... + 77466.

It is an arithmetic number, because the mean of its divisors is an integer number (273769518).

Almost surely, 2^2189874066 is an apocalyptic number.

2189874066 is an abundant number, since it is smaller than the sum of its proper divisors (2190438222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2189874066 is a wasteful number, since it uses less digits than its factorization.

2189874066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47017.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 2189874066 is about 46796.0902854074. The cubic root of 2189874066 is about 1298.5929680086.

The spelling of 2189874066 in words is "two billion, one hundred eighty-nine million, eight hundred seventy-four thousand, sixty-six".