6918813211 has 4 divisors (see below), whose sum is σ = 6939344152. Its totient is φ = 6898282272.

The previous prime is 6918813193. The next prime is 6918813227. The reversal of 6918813211 is 1123188196.

It is a happy number.

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 6918813211 - 2¹⁷ = 6918682139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6918813611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10264965 + ... + 10265638.

It is an arithmetic number, because the mean of its divisors is an integer number (1734836038).

Almost surely, 2^6918813211 is an apocalyptic number.

6918813211 is a deficient number, since it is larger than the sum of its proper divisors (20530941).

6918813211 is a wasteful number, since it uses less digits than its factorization.

6918813211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20530940.

The product of its digits is 20736, while the sum is 40.

The square root of 6918813211 is about 83179.4037667979. The cubic root of 6918813211 is about 1905.5069421465.

The spelling of 6918813211 in words is "six billion, nine hundred eighteen million, eight hundred thirteen thousand, two hundred eleven".