6811919 has 2 divisors, whose sum is σ = 6811920. Its totient is φ = 6811918.

The previous prime is 6811913. The next prime is 6811921. The reversal of 6811919 is 9191186.

6811919 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6811919 - 2²⁰ = 5763343 is a prime.

It is a super-2 number, since 2×6811919² = 92804480925122, which contains 22 as substring.

Together with 6811921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6811913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3405959 + 3405960.

It is an arithmetic number, because the mean of its divisors is an integer number (3405960).

Almost surely, 2^6811919 is an apocalyptic number.

6811919 is a deficient number, since it is larger than the sum of its proper divisors (1).

6811919 is an equidigital number, since it uses as much as digits as its factorization.

6811919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 35.

The square root of 6811919 is about 2609.9653254402. The cubic root of 6811919 is about 189.5642739068.

The spelling of 6811919 in words is "six million, eight hundred eleven thousand, nine hundred nineteen".