2166228859 has 8 divisors (see below), whose sum is σ = 2294615520. Its totient is φ = 2037949056.

The previous prime is 2166228851. The next prime is 2166228887. The reversal of 2166228859 is 9588226612.

It is a happy number.

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 2166228859 - 2³ = 2166228851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2166228851) 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, 17097 + ... + 68005.

It is an arithmetic number, because the mean of its divisors is an integer number (286826940).

Almost surely, 2^2166228859 is an apocalyptic number.

2166228859 is a deficient number, since it is larger than the sum of its proper divisors (128386661).

2166228859 is a wasteful number, since it uses less digits than its factorization.

2166228859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53429.

The product of its digits is 829440, while the sum is 49.

The square root of 2166228859 is about 46542.7637662398. The cubic root of 2166228859 is about 1293.9021835527.

The spelling of 2166228859 in words is "two billion, one hundred sixty-six million, two hundred twenty-eight thousand, eight hundred fifty-nine".