2813778589 has 2 divisors, whose sum is σ = 2813778590. Its totient is φ = 2813778588.

The previous prime is 2813778587. The next prime is 2813778593. The reversal of 2813778589 is 9858773182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410002500 + 1403776089 = 37550^2 + 37467^2 .

It is a cyclic number.

It is not a de Polignac number, because 2813778589 - 2¹ = 2813778587 is a prime.

Together with 2813778587, 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 (2813778587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1406889294 + 1406889295.

It is an arithmetic number, because the mean of its divisors is an integer number (1406889295).

Almost surely, 2^2813778589 is an apocalyptic number.

It is an amenable number.

2813778589 is a deficient number, since it is larger than the sum of its proper divisors (1).

2813778589 is an equidigital number, since it uses as much as digits as its factorization.

2813778589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6773760, while the sum is 58.

The square root of 2813778589 is about 53045.0618719594. The cubic root of 2813778589 is about 1411.7679128385.

The spelling of 2813778589 in words is "two billion, eight hundred thirteen million, seven hundred seventy-eight thousand, five hundred eighty-nine".