2159643222 has 40 divisors (see below), whose sum is σ = 5279132232. Its totient is φ = 654436800.

The previous prime is 2159643209. The next prime is 2159643301. The reversal of 2159643222 is 2223469512.

2159643222 is a `hidden beast` number, since 2 + 1 + 5 + 9 + 643 + 2 + 2 + 2 = 666.

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 19 ways as a sum of consecutive naturals, for example, 604179 + ... + 607742.

Almost surely, 2^2159643222 is an apocalyptic number.

2159643222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2159643222 is an abundant number, since it is smaller than the sum of its proper divisors (3119489010).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2159643222 is a wasteful number, since it uses less digits than its factorization.

2159643222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211946 (or 1211937 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 2159643222 is about 46471.9616758320. The cubic root of 2159643222 is about 1292.5896383502.

The spelling of 2159643222 in words is "two billion, one hundred fifty-nine million, six hundred forty-three thousand, two hundred twenty-two".