6816868938 has 192 divisors, whose sum is σ = 17554268160. Its totient is φ = 1890345600.

The previous prime is 6816868871. The next prime is 6816868967. The reversal of 6816868938 is 8398686186.

It is a super-3 number, since 3×6816868938³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15387745 + ... + 15388187.

It is an arithmetic number, because the mean of its divisors is an integer number (91428480).

Almost surely, 2^6816868938 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6816868938, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8777134080).

6816868938 is an abundant number, since it is smaller than the sum of its proper divisors (10737399222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6816868938 is a wasteful number, since it uses less digits than its factorization.

6816868938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 622 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 63.

The square root of 6816868938 is about 82564.3321174465. The cubic root of 6816868938 is about 1896.1017894532.

The spelling of 6816868938 in words is "six billion, eight hundred sixteen million, eight hundred sixty-eight thousand, nine hundred thirty-eight".