6782138742 has 16 divisors (see below), whose sum is σ = 13583915712. Its totient is φ = 2257439880.

The previous prime is 6782138689. The next prime is 6782138743. The reversal of 6782138742 is 2478312876.

It is a junction number, because it is equal to n+sod(n) for n = 6782138691 and 6782138700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6782138743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 813768 + ... + 822059.

It is an arithmetic number, because the mean of its divisors is an integer number (848994732).

Almost surely, 2^6782138742 is an apocalyptic number.

6782138742 is an abundant number, since it is smaller than the sum of its proper divisors (6801776970).

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

6782138742 is a wasteful number, since it uses less digits than its factorization.

6782138742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636523.

The product of its digits is 903168, while the sum is 48.

The square root of 6782138742 is about 82353.7415179177. The cubic root of 6782138742 is about 1892.8762549749.

The spelling of 6782138742 in words is "six billion, seven hundred eighty-two million, one hundred thirty-eight thousand, seven hundred forty-two".