6881141947 has 4 divisors (see below), whose sum is σ = 6884607016. Its totient is φ = 6877676880.

The previous prime is 6881141941. The next prime is 6881141957. The reversal of 6881141947 is 7491411886.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6881141947 - 2¹¹ = 6881139899 is a prime.

It is a super-2 number, since 2×6881141947² = 94700228989525901618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6881141947.

It is not an unprimeable number, because it can be changed into a prime (6881141941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1729554 + ... + 1733527.

It is an arithmetic number, because the mean of its divisors is an integer number (1721151754).

Almost surely, 2^6881141947 is an apocalyptic number.

6881141947 is a deficient number, since it is larger than the sum of its proper divisors (3465069).

6881141947 is a wasteful number, since it uses less digits than its factorization.

6881141947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3465068.

The product of its digits is 387072, while the sum is 49.

The square root of 6881141947 is about 82952.6488244950. The cubic root of 6881141947 is about 1902.0423050531.

The spelling of 6881141947 in words is "six billion, eight hundred eighty-one million, one hundred forty-one thousand, nine hundred forty-seven".