2189445085 has 8 divisors (see below), whose sum is σ = 2628159840. Its totient is φ = 1751005584.

The previous prime is 2189445047. The next prime is 2189445121. The reversal of 2189445085 is 5805449812.

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 2189445085 - 2¹¹ = 2189443037 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 50887 + ... + 83476.

It is an arithmetic number, because the mean of its divisors is an integer number (328519980).

Almost surely, 2^2189445085 is an apocalyptic number.

It is an amenable number.

2189445085 is a deficient number, since it is larger than the sum of its proper divisors (438714755).

2189445085 is a wasteful number, since it uses less digits than its factorization.

2189445085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137627.

The product of its (nonzero) digits is 460800, while the sum is 46.

The square root of 2189445085 is about 46791.5065476631. The cubic root of 2189445085 is about 1298.5081673803.

The spelling of 2189445085 in words is "two billion, one hundred eighty-nine million, four hundred forty-five thousand, eighty-five".