2818393 has 2 divisors, whose sum is σ = 2818394. Its totient is φ = 2818392.

The previous prime is 2818391. The next prime is 2818399. The reversal of 2818393 is 3938182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2064969 + 753424 = 1437^2 + 868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818393 - 2¹ = 2818391 is a prime.

It is a super-3 number, since 3×2818393³ = 67162353968905633371, which contains 333 as substring.

Together with 2818391, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2818391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409196 + 1409197.

It is an arithmetic number, because the mean of its divisors is an integer number (1409197).

2^2818393 is an apocalyptic number.

It is an amenable number.

2818393 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818393 is an equidigital number, since it uses as much as digits as its factorization.

2818393 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 34.

The square root of 2818393 is about 1678.8070169022. The cubic root of 2818393 is about 141.2539226728.

The spelling of 2818393 in words is "two million, eight hundred eighteen thousand, three hundred ninety-three".