6243438394 has 8 divisors (see below), whose sum is σ = 9916049268. Its totient is φ = 2938088640.

The previous prime is 6243438373. The next prime is 6243438403. The reversal of 6243438394 is 4938343426.

It can be written as a sum of positive squares in 2 ways, for example, as 5641962769 + 601475625 = 75113^2 + 24525^2 .

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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91815237 + ... + 91815304.

Almost surely, 2^6243438394 is an apocalyptic number.

6243438394 is a deficient number, since it is larger than the sum of its proper divisors (3672610874).

6243438394 is a wasteful number, since it uses less digits than its factorization.

6243438394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183630560.

The product of its digits is 1492992, while the sum is 46.

The square root of 6243438394 is about 79015.4313662844. The cubic root of 6243438394 is about 1841.3709059181.

The spelling of 6243438394 in words is "six billion, two hundred forty-three million, four hundred thirty-eight thousand, three hundred ninety-four".