12841813 has 2 divisors, whose sum is σ = 12841814. Its totient is φ = 12841812.

The previous prime is 12841811. The next prime is 12841861. The reversal of 12841813 is 31814821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11444689 + 1397124 = 3383^2 + 1182^2 .

It is a cyclic number.

It is not a de Polignac number, because 12841813 - 2¹ = 12841811 is a prime.

It is a super-2 number, since 2×12841813² = 329824322253938, which contains 22 as substring.

Together with 12841811, 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 (12841811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6420906 + 6420907.

It is an arithmetic number, because the mean of its divisors is an integer number (6420907).

Almost surely, 2^12841813 is an apocalyptic number.

It is an amenable number.

12841813 is a deficient number, since it is larger than the sum of its proper divisors (1).

12841813 is an equidigital number, since it uses as much as digits as its factorization.

12841813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 28.

The square root of 12841813 is about 3583.5475439849. The cubic root of 12841813 is about 234.1758546115.

The spelling of 12841813 in words is "twelve million, eight hundred forty-one thousand, eight hundred thirteen".