2189065574 has 4 divisors (see below), whose sum is σ = 3283598364. Its totient is φ = 1094532786.

The previous prime is 2189065553. The next prime is 2189065577. The reversal of 2189065574 is 4755609812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189065577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 547266392 + ... + 547266395.

It is an arithmetic number, because the mean of its divisors is an integer number (820899591).

Almost surely, 2^2189065574 is an apocalyptic number.

2189065574 is a deficient number, since it is larger than the sum of its proper divisors (1094532790).

2189065574 is a wasteful number, since it uses less digits than its factorization.

2189065574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094532789.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 2189065574 is about 46787.4510312327. The cubic root of 2189065574 is about 1298.4331367082.

The spelling of 2189065574 in words is "two billion, one hundred eighty-nine million, sixty-five thousand, five hundred seventy-four".