9943181089 has 8 divisors (see below), whose sum is σ = 10083170952. Its totient is φ = 9804103680.

The previous prime is 9943181071. The next prime is 9943181107. The reversal of 9943181089 is 9801813499.

It is an interprime number because it is at equal distance from previous prime (9943181071) and next prime (9943181107).

It can be written as a sum of positive squares in 4 ways, for example, as 61230625 + 9881950464 = 7825^2 + 99408^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9943181089 - 2⁵ = 9943181057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9943182089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206152 + ... + 249769.

It is an arithmetic number, because the mean of its divisors is an integer number (1260396369).

Almost surely, 2^9943181089 is an apocalyptic number.

It is an amenable number.

9943181089 is a deficient number, since it is larger than the sum of its proper divisors (139989863).

9943181089 is a wasteful number, since it uses less digits than its factorization.

9943181089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456227.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 9943181089 is about 99715.5007458720. The cubic root of 9943181089 is about 2150.3465162779.

The spelling of 9943181089 in words is "nine billion, nine hundred forty-three million, one hundred eighty-one thousand, eighty-nine".