6864181980 has 48 divisors (see below), whose sum is σ = 19287671424. Its totient is φ = 1823976000.

The previous prime is 6864181943. The next prime is 6864181997. The reversal of 6864181980 is 891814686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185146 + ... + 219105.

It is an arithmetic number, because the mean of its divisors is an integer number (401826488).

Almost surely, 2^6864181980 is an apocalyptic number.

6864181980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6864181980 is an abundant number, since it is smaller than the sum of its proper divisors (12423489444).

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

6864181980 is a wasteful number, since it uses less digits than its factorization.

6864181980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404546 (or 404544 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 51.

The square root of 6864181980 is about 82850.3589612019. The cubic root of 6864181980 is about 1900.4783633934.

The spelling of 6864181980 in words is "six billion, eight hundred sixty-four million, one hundred eighty-one thousand, nine hundred eighty".