6881943820 has 24 divisors (see below), whose sum is σ = 14526971424. Its totient is φ = 2738512896.

The previous prime is 6881943769. The next prime is 6881943821. The reversal of 6881943820 is 283491886.

It is a super-2 number, since 2×6881943820² = 94722301483272384800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6881943821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 887584 + ... + 895303.

It is an arithmetic number, because the mean of its divisors is an integer number (605290476).

Almost surely, 2^6881943820 is an apocalyptic number.

It is an amenable number.

6881943820 is an abundant number, since it is smaller than the sum of its proper divisors (7645027604).

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

6881943820 is a wasteful number, since it uses less digits than its factorization.

6881943820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1783089 (or 1783087 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 6881943820 is about 82957.4820013240. The cubic root of 6881943820 is about 1902.1161850932.

The spelling of 6881943820 in words is "six billion, eight hundred eighty-one million, nine hundred forty-three thousand, eight hundred twenty".