6838649376859 has 4 divisors (see below), whose sum is σ = 6839447081616. Its totient is φ = 6837851672104.

The previous prime is 6838649376851. The next prime is 6838649376863. The reversal of 6838649376859 is 9586739468386.

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 6838649376859 - 2³ = 6838649376851 is a prime.

It is a super-3 number, since 3×6838649376859³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6838649376851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398839519 + ... + 398856664.

It is an arithmetic number, because the mean of its divisors is an integer number (1709861770404).

Almost surely, 2^{6838649376859} is an apocalyptic number.

6838649376859 is a deficient number, since it is larger than the sum of its proper divisors (797704757).

6838649376859 is an equidigital number, since it uses as much as digits as its factorization.

6838649376859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797704756.

The product of its digits is 11287019520, while the sum is 82.

The spelling of 6838649376859 in words is "six trillion, eight hundred thirty-eight billion, six hundred forty-nine million, three hundred seventy-six thousand, eight hundred fifty-nine".