2684215813 has 2 divisors, whose sum is σ = 2684215814. Its totient is φ = 2684215812.

The previous prime is 2684215811. The next prime is 2684215819. The reversal of 2684215813 is 3185124862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2535424609 + 148791204 = 50353^2 + 12198^2 .

It is a cyclic number.

It is not a de Polignac number, because 2684215813 - 2¹ = 2684215811 is a prime.

Together with 2684215811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2684215811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342107906 + 1342107907.

It is an arithmetic number, because the mean of its divisors is an integer number (1342107907).

Almost surely, 2^2684215813 is an apocalyptic number.

It is an amenable number.

2684215813 is a deficient number, since it is larger than the sum of its proper divisors (1).

2684215813 is an equidigital number, since it uses as much as digits as its factorization.

2684215813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 40.

The square root of 2684215813 is about 51809.4181882020. The cubic root of 2684215813 is about 1389.7578746009.

The spelling of 2684215813 in words is "two billion, six hundred eighty-four million, two hundred fifteen thousand, eight hundred thirteen".