6881319438 has 16 divisors (see below), whose sum is σ = 15728730240. Its totient is φ = 1966091256.

The previous prime is 6881319427. The next prime is 6881319451. The reversal of 6881319438 is 8349131886.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81920428 + ... + 81920511.

It is an arithmetic number, because the mean of its divisors is an integer number (983045640).

Almost surely, 2^6881319438 is an apocalyptic number.

6881319438 is an abundant number, since it is smaller than the sum of its proper divisors (8847410802).

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

6881319438 is a wasteful number, since it uses less digits than its factorization.

6881319438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163840951.

The product of its digits is 995328, while the sum is 51.

The square root of 6881319438 is about 82953.7186508236. The cubic root of 6881319438 is about 1902.0586585639.

The spelling of 6881319438 in words is "six billion, eight hundred eighty-one million, three hundred nineteen thousand, four hundred thirty-eight".