9691823728 has 40 divisors (see below), whose sum is σ = 18980655200. Its totient is φ = 4793693184.

The previous prime is 9691823723. The next prime is 9691823759. The reversal of 9691823728 is 8273281969.

9691823728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9691823723) 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 7 ways as a sum of consecutive naturals, for example, 1857988 + ... + 1863196.

It is an arithmetic number, because the mean of its divisors is an integer number (474516380).

Almost surely, 2^9691823728 is an apocalyptic number.

It is an amenable number.

9691823728 is a deficient number, since it is larger than the sum of its proper divisors (9288831472).

9691823728 is a wasteful number, since it uses less digits than its factorization.

9691823728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6449 (or 6443 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 9691823728 is about 98447.0605350917. The cubic root of 9691823728 is about 2132.0718471283.

The spelling of 9691823728 in words is "nine billion, six hundred ninety-one million, eight hundred twenty-three thousand, seven hundred twenty-eight".