6743781138 has 8 divisors (see below), whose sum is σ = 13487562288. Its totient is φ = 2247927044.

The previous prime is 6743781113. The next prime is 6743781151. The reversal of 6743781138 is 8311873476.

It is a sphenic number, since it is the product of 3 distinct primes.

6743781138 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 561981756 + ... + 561981767.

It is an arithmetic number, because the mean of its divisors is an integer number (1685945286).

Almost surely, 2^6743781138 is an apocalyptic number.

6743781138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6743781138 is a wasteful number, since it uses less digits than its factorization.

6743781138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123963528.

The product of its digits is 677376, while the sum is 48.

The square root of 6743781138 is about 82120.5281156910. The cubic root of 6743781138 is about 1889.3010057594.

The spelling of 6743781138 in words is "six billion, seven hundred forty-three million, seven hundred eighty-one thousand, one hundred thirty-eight".