2166246889 has 8 divisors (see below), whose sum is σ = 2193505920. Its totient is φ = 2139102000.

The previous prime is 2166246857. The next prime is 2166246941. The reversal of 2166246889 is 9886426612.

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 2166246889 - 2⁵ = 2166246857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166246689) 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, 9984 + ... + 66574.

It is an arithmetic number, because the mean of its divisors is an integer number (274188240).

Almost surely, 2^2166246889 is an apocalyptic number.

It is an amenable number.

2166246889 is a deficient number, since it is larger than the sum of its proper divisors (27259031).

2166246889 is a wasteful number, since it uses less digits than its factorization.

2166246889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57071.

The product of its digits is 1990656, while the sum is 52.

The square root of 2166246889 is about 46542.9574586747. The cubic root of 2166246889 is about 1293.9057733537.

The spelling of 2166246889 in words is "two billion, one hundred sixty-six million, two hundred forty-six thousand, eight hundred eighty-nine".