8981385943 has 4 divisors (see below), whose sum is σ = 9371881008. Its totient is φ = 8590890880.

The previous prime is 8981385929. The next prime is 8981385947. The reversal of 8981385943 is 3495831898.

8981385943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8981385943 - 2⁵ = 8981385911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8981385947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195247498 + ... + 195247543.

It is an arithmetic number, because the mean of its divisors is an integer number (2342970252).

Almost surely, 2^8981385943 is an apocalyptic number.

8981385943 is a deficient number, since it is larger than the sum of its proper divisors (390495065).

8981385943 is a wasteful number, since it uses less digits than its factorization.

8981385943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390495064.

The product of its digits is 7464960, while the sum is 58.

The square root of 8981385943 is about 94770.1743324344. The cubic root of 8981385943 is about 2078.6488036938.

The spelling of 8981385943 in words is "eight billion, nine hundred eighty-one million, three hundred eighty-five thousand, nine hundred forty-three".