2168223166 has 4 divisors (see below), whose sum is σ = 3252334752. Its totient is φ = 1084111582.

The previous prime is 2168223139. The next prime is 2168223203. The reversal of 2168223166 is 6613228612.

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

It is a congruent number.

It is an unprimeable number.

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, 542055790 + ... + 542055793.

It is an arithmetic number, because the mean of its divisors is an integer number (813083688).

Almost surely, 2^2168223166 is an apocalyptic number.

2168223166 is a deficient number, since it is larger than the sum of its proper divisors (1084111586).

2168223166 is a wasteful number, since it uses less digits than its factorization.

2168223166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084111585.

The product of its digits is 41472, while the sum is 37.

The square root of 2168223166 is about 46564.1832957478. The cubic root of 2168223166 is about 1294.2991324862.

The spelling of 2168223166 in words is "two billion, one hundred sixty-eight million, two hundred twenty-three thousand, one hundred sixty-six".