2821537842 has 16 divisors (see below), whose sum is σ = 5648367360. Its totient is φ = 939630672.

The previous prime is 2821537801. The next prime is 2821537853. The reversal of 2821537842 is 2487351282.

It is a super-2 number, since 2×2821537842² = 15922151587676033928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2821537794 and 2821537803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213538 + ... + 226365.

It is an arithmetic number, because the mean of its divisors is an integer number (353022960).

Almost surely, 2^2821537842 is an apocalyptic number.

2821537842 is an abundant number, since it is smaller than the sum of its proper divisors (2826829518).

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

2821537842 is a wasteful number, since it uses less digits than its factorization.

2821537842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440977.

The product of its digits is 215040, while the sum is 42.

The square root of 2821537842 is about 53118.1498360024. The cubic root of 2821537842 is about 1413.0644150725.

The spelling of 2821537842 in words is "two billion, eight hundred twenty-one million, five hundred thirty-seven thousand, eight hundred forty-two".