6978343738 has 8 divisors (see below), whose sum is σ = 10468163988. Its totient is φ = 3488955744.

The previous prime is 6978343717. The next prime is 6978343751. The reversal of 6978343738 is 8373438796.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5985652689 + 992691049 = 77367^2 + 31507^2 .

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

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, 64131 + ... + 134422.

Almost surely, 2^6978343738 is an apocalyptic number.

6978343738 is a deficient number, since it is larger than the sum of its proper divisors (3489820250).

6978343738 is a wasteful number, since it uses less digits than its factorization.

6978343738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216128.

The product of its digits is 18289152, while the sum is 58.

The square root of 6978343738 is about 83536.4814796506. The cubic root of 6978343738 is about 1910.9564335335.

The spelling of 6978343738 in words is "six billion, nine hundred seventy-eight million, three hundred forty-three thousand, seven hundred thirty-eight".