9981075843 has 24 divisors (see below), whose sum is σ = 14868023040. Its totient is φ = 6449115120.

The previous prime is 9981075821. The next prime is 9981075851. The reversal of 9981075843 is 3485701899.

9981075843 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9981075843 - 2¹³ = 9981067651 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 9981075843.

It is not an unprimeable number, because it can be changed into a prime (9981075803) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94671 + ... + 170072.

It is an arithmetic number, because the mean of its divisors is an integer number (619500960).

Almost surely, 2^9981075843 is an apocalyptic number.

9981075843 is a deficient number, since it is larger than the sum of its proper divisors (4886947197).

9981075843 is a wasteful number, since it uses less digits than its factorization.

9981075843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264879 (or 264876 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 9981075843 is about 99905.3344071276. The cubic root of 9981075843 is about 2153.0748031697.

The spelling of 9981075843 in words is "nine billion, nine hundred eighty-one million, seventy-five thousand, eight hundred forty-three".