2176821338 has 16 divisors (see below), whose sum is σ = 3607623360. Its totient is φ = 979847616.

The previous prime is 2176821319. The next prime is 2176821341. The reversal of 2176821338 is 8331286712.

2176821338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2176821338² = 9477102275144220488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2176821295 and 2176821304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1391048 + ... + 1392611.

It is an arithmetic number, because the mean of its divisors is an integer number (225476460).

Almost surely, 2^2176821338 is an apocalyptic number.

2176821338 is a deficient number, since it is larger than the sum of its proper divisors (1430802022).

2176821338 is a wasteful number, since it uses less digits than its factorization.

2176821338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783701.

The product of its digits is 96768, while the sum is 41.

The square root of 2176821338 is about 46656.4179722361. The cubic root of 2176821338 is about 1296.0077402150.

The spelling of 2176821338 in words is "two billion, one hundred seventy-six million, eight hundred twenty-one thousand, three hundred thirty-eight".