2068391680 has 72 divisors (see below), whose sum is σ = 5215266000. Its totient is φ = 783802368.

The previous prime is 2068391671. The next prime is 2068391681. The reversal of 2068391680 is 861938602.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2068391681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18205 + ... + 66844.

It is an arithmetic number, because the mean of its divisors is an integer number (72434250).

Almost surely, 2^2068391680 is an apocalyptic number.

2068391680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2068391680 is an abundant number, since it is smaller than the sum of its proper divisors (3146874320).

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

2068391680 is an equidigital number, since it uses as much as digits as its factorization.

2068391680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85089 (or 85075 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 2068391680 is about 45479.5743163895. The cubic root of 2068391680 is about 1274.1217440116.

The spelling of 2068391680 in words is "two billion, sixty-eight million, three hundred ninety-one thousand, six hundred eighty".