6839191081 has 8 divisors (see below), whose sum is σ = 6932563200. Its totient is φ = 6745989120.

The previous prime is 6839191067. The next prime is 6839191129. The reversal of 6839191081 is 1801919386.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6839191081 - 2⁵ = 6839191049 is a prime.

It is a super-2 number, since 2×6839191081² = 93549069284859897122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6839194081) 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 7 ways as a sum of consecutive naturals, for example, 39465 + ... + 123433.

It is an arithmetic number, because the mean of its divisors is an integer number (866570400).

Almost surely, 2^6839191081 is an apocalyptic number.

It is an amenable number.

6839191081 is a deficient number, since it is larger than the sum of its proper divisors (93372119).

6839191081 is a wasteful number, since it uses less digits than its factorization.

6839191081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85079.

The product of its (nonzero) digits is 93312, while the sum is 46.

The square root of 6839191081 is about 82699.4019385872. The cubic root of 6839191081 is about 1898.1691579720.

The spelling of 6839191081 in words is "six billion, eight hundred thirty-nine million, one hundred ninety-one thousand, eighty-one".