9823809020 has 24 divisors (see below), whose sum is σ = 21715789200. Its totient is φ = 3722706432.

The previous prime is 9823809007. The next prime is 9823809043. The reversal of 9823809020 is 209083289.

It is a super-2 number, since 2×9823809020² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12925685 + ... + 12926444.

It is an arithmetic number, because the mean of its divisors is an integer number (904824550).

Almost surely, 2^9823809020 is an apocalyptic number.

It is an amenable number.

9823809020 is an abundant number, since it is smaller than the sum of its proper divisors (11891980180).

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

9823809020 is a wasteful number, since it uses less digits than its factorization.

9823809020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25852157 (or 25852155 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 9823809020 is about 99115.1301265352. The cubic root of 9823809020 is about 2141.7065768039.

The spelling of 9823809020 in words is "nine billion, eight hundred twenty-three million, eight hundred nine thousand, twenty".