6851738839 has 8 divisors (see below), whose sum is σ = 7484455440. Its totient is φ = 6220660800.

The previous prime is 6851738791. The next prime is 6851738849. The reversal of 6851738839 is 9388371586.

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 6851738839 - 2⁷ = 6851738711 is a prime.

It is a super-2 number, since 2×6851738839² = 93892650235722135842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6851738849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400884 + ... + 417625.

It is an arithmetic number, because the mean of its divisors is an integer number (935556930).

Almost surely, 2^6851738839 is an apocalyptic number.

6851738839 is a deficient number, since it is larger than the sum of its proper divisors (632716601).

6851738839 is a wasteful number, since it uses less digits than its factorization.

6851738839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819281.

The product of its digits is 8709120, while the sum is 58.

The square root of 6851738839 is about 82775.2308302429. The cubic root of 6851738839 is about 1899.3292959549.

The spelling of 6851738839 in words is "six billion, eight hundred fifty-one million, seven hundred thirty-eight thousand, eight hundred thirty-nine".