2161659226 has 8 divisors (see below), whose sum is σ = 3243693024. Its totient is φ = 1080428220.

The previous prime is 2161659193. The next prime is 2161659239. The reversal of 2161659226 is 6229561612.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 193920 + ... + 204763.

It is an arithmetic number, because the mean of its divisors is an integer number (405461628).

Almost surely, 2^2161659226 is an apocalyptic number.

2161659226 is a deficient number, since it is larger than the sum of its proper divisors (1082033798).

2161659226 is a wasteful number, since it uses less digits than its factorization.

2161659226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401396.

The product of its digits is 77760, while the sum is 40.

The square root of 2161659226 is about 46493.6471574343. The cubic root of 2161659226 is about 1292.9917194942.

The spelling of 2161659226 in words is "two billion, one hundred sixty-one million, six hundred fifty-nine thousand, two hundred twenty-six".