6818542 has 4 divisors (see below), whose sum is σ = 10227816. Its totient is φ = 3409270.

The previous prime is 6818527. The next prime is 6818561. The reversal of 6818542 is 2458186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2458186 = 2 ⋅1229093.

It is a junction number, because it is equal to n+sod(n) for n = 6818498 and 6818507.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1704634 + ... + 1704637.

It is an arithmetic number, because the mean of its divisors is an integer number (2556954).

Almost surely, 2^6818542 is an apocalyptic number.

6818542 is a deficient number, since it is larger than the sum of its proper divisors (3409274).

6818542 is a wasteful number, since it uses less digits than its factorization.

6818542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409273.

The product of its digits is 15360, while the sum is 34.

The square root of 6818542 is about 2611.2338079919. The cubic root of 6818542 is about 189.6256896653.

The spelling of 6818542 in words is "six million, eight hundred eighteen thousand, five hundred forty-two".