2821973838 has 8 divisors (see below), whose sum is σ = 5643947688. Its totient is φ = 940657944.

The previous prime is 2821973807. The next prime is 2821973863. The reversal of 2821973838 is 8383791282.

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

2821973838 is an admirable number.

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 in 3 ways as a sum of consecutive naturals, for example, 235164481 + ... + 235164492.

It is an arithmetic number, because the mean of its divisors is an integer number (705493461).

Almost surely, 2^2821973838 is an apocalyptic number.

2821973838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2821973838 is a wasteful number, since it uses less digits than its factorization.

2821973838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470328978.

The product of its digits is 1161216, while the sum is 51.

The square root of 2821973838 is about 53122.2536984266. The cubic root of 2821973838 is about 1413.1371955604.

The spelling of 2821973838 in words is "two billion, eight hundred twenty-one million, nine hundred seventy-three thousand, eight hundred thirty-eight".