6380081920 has 36 divisors (see below), whose sum is σ = 15282293040. Its totient is φ = 2552032256.

The previous prime is 6380081909. The next prime is 6380081923. The reversal of 6380081920 is 291800836.

It is a self number, because there is not a number n which added to its sum of digits gives 6380081920.

It is not an unprimeable number, because it can be changed into a prime (6380081923) 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, 2490940 + ... + 2493499.

It is an arithmetic number, because the mean of its divisors is an integer number (424508140).

Almost surely, 2^6380081920 is an apocalyptic number.

It is an amenable number.

6380081920 is an abundant number, since it is smaller than the sum of its proper divisors (8902211120).

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

6380081920 is an equidigital number, since it uses as much as digits as its factorization.

6380081920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4984460 (or 4984446 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 6380081920 is about 79875.4149910972. The cubic root of 6380081920 is about 1854.7074581719.

The spelling of 6380081920 in words is "six billion, three hundred eighty million, eighty-one thousand, nine hundred twenty".