6801638438 has 8 divisors (see below), whose sum is σ = 11659951632. Its totient is φ = 2914987896.

The previous prime is 6801638399. The next prime is 6801638447. The reversal of 6801638438 is 8348361086.

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

It is a junction number, because it is equal to n+sod(n) for n = 6801638392 and 6801638401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242915645 + ... + 242915672.

It is an arithmetic number, because the mean of its divisors is an integer number (1457493954).

Almost surely, 2^6801638438 is an apocalyptic number.

6801638438 is a deficient number, since it is larger than the sum of its proper divisors (4858313194).

6801638438 is a wasteful number, since it uses less digits than its factorization.

6801638438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485831326.

The product of its (nonzero) digits is 663552, while the sum is 47.

The square root of 6801638438 is about 82472.0464036148. The cubic root of 6801638438 is about 1894.6886229639.

The spelling of 6801638438 in words is "six billion, eight hundred one million, six hundred thirty-eight thousand, four hundred thirty-eight".