6811822387 has 4 divisors (see below), whose sum is σ = 6811990960. Its totient is φ = 6811653816.

The previous prime is 6811822379. The next prime is 6811822427. The reversal of 6811822387 is 7832281186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6811822387 - 2³ = 6811822379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6811822307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16498 + ... + 117880.

It is an arithmetic number, because the mean of its divisors is an integer number (1702997740).

Almost surely, 2^6811822387 is an apocalyptic number.

6811822387 is a deficient number, since it is larger than the sum of its proper divisors (168573).

6811822387 is a wasteful number, since it uses less digits than its factorization.

6811822387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168572.

The product of its digits is 258048, while the sum is 46.

The square root of 6811822387 is about 82533.7651328231. The cubic root of 6811822387 is about 1895.6337771000.

The spelling of 6811822387 in words is "six billion, eight hundred eleven million, eight hundred twenty-two thousand, three hundred eighty-seven".