6818838 has 16 divisors (see below), whose sum is σ = 14686896. Its totient is φ = 2098080.

The previous prime is 6818837. The next prime is 6818839. The reversal of 6818838 is 8388186.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6818837) and next prime (6818839).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6818838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6818831) 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, 43633 + ... + 43788.

It is an arithmetic number, because the mean of its divisors is an integer number (917931).

Almost surely, 2^6818838 is an apocalyptic number.

6818838 is an abundant number, since it is smaller than the sum of its proper divisors (7868058).

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

6818838 is a wasteful number, since it uses less digits than its factorization.

6818838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87439.

The product of its digits is 73728, while the sum is 42.

The square root of 6818838 is about 2611.2904855646. The cubic root of 6818838 is about 189.6284335751.

The spelling of 6818838 in words is "six million, eight hundred eighteen thousand, eight hundred thirty-eight".