9161443816 has 32 divisors (see below), whose sum is σ = 19634976000. Its totient is φ = 3925670976.

The previous prime is 9161443813. The next prime is 9161443849. The reversal of 9161443816 is 6183441619.

It is not an unprimeable number, because it can be changed into a prime (9161443813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473745 + ... + 492703.

It is an arithmetic number, because the mean of its divisors is an integer number (613593000).

Almost surely, 2^9161443816 is an apocalyptic number.

It is an amenable number.

9161443816 is an abundant number, since it is smaller than the sum of its proper divisors (10473532184).

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

9161443816 is a wasteful number, since it uses less digits than its factorization.

9161443816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27601 (or 27597 counting only the distinct ones).

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

The square root of 9161443816 is about 95715.4314413303. The cubic root of 9161443816 is about 2092.4478401734.

The spelling of 9161443816 in words is "nine billion, one hundred sixty-one million, four hundred forty-three thousand, eight hundred sixteen".