2821996813 has 2 divisors, whose sum is σ = 2821996814. Its totient is φ = 2821996812.

The previous prime is 2821996783. The next prime is 2821996897. The reversal of 2821996813 is 3186991282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2361765604 + 460231209 = 48598^2 + 21453^2 .

It is a cyclic number.

It is not a de Polignac number, because 2821996813 - 2²⁹ = 2285125901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2821996313) by changing a digit.

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 as a sum of consecutive naturals, namely, 1410998406 + 1410998407.

It is an arithmetic number, because the mean of its divisors is an integer number (1410998407).

Almost surely, 2^2821996813 is an apocalyptic number.

It is an amenable number.

2821996813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821996813 is an equidigital number, since it uses as much as digits as its factorization.

2821996813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 373248, while the sum is 49.

The square root of 2821996813 is about 53122.4699444595. The cubic root of 2821996813 is about 1413.1410305521.

The spelling of 2821996813 in words is "two billion, eight hundred twenty-one million, nine hundred ninety-six thousand, eight hundred thirteen".