2821193009 has 2 divisors, whose sum is σ = 2821193010. Its totient is φ = 2821193008.

The previous prime is 2821193003. The next prime is 2821193033. The reversal of 2821193009 is 9003911282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2028601600 + 792591409 = 45040^2 + 28153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2821193009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2821193009.

It is not a weakly prime, because it can be changed into another prime (2821193003) by changing a digit.

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 as a sum of consecutive naturals, namely, 1410596504 + 1410596505.

It is an arithmetic number, because the mean of its divisors is an integer number (1410596505).

Almost surely, 2^2821193009 is an apocalyptic number.

It is an amenable number.

2821193009 is a deficient number, since it is larger than the sum of its proper divisors (1).

2821193009 is an equidigital number, since it uses as much as digits as its factorization.

2821193009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2821193009 is about 53114.9038312224. The cubic root of 2821193009 is about 1413.0068470463.

The spelling of 2821193009 in words is "two billion, eight hundred twenty-one million, one hundred ninety-three thousand, nine".