9121539108 has 192 divisors, whose sum is σ = 25676856576. Its totient is φ = 2488320000.

The previous prime is 9121539079. The next prime is 9121539109. The reversal of 9121539108 is 8019351219.

9121539108 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9121539109) 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 63 ways as a sum of consecutive naturals, for example, 5063808 + ... + 5065608.

It is an arithmetic number, because the mean of its divisors is an integer number (133733628).

Almost surely, 2^9121539108 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9121539108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12838428288).

9121539108 is an abundant number, since it is smaller than the sum of its proper divisors (16555317468).

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

9121539108 is a wasteful number, since it uses less digits than its factorization.

9121539108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1932 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 39.

The square root of 9121539108 is about 95506.7490180668. The cubic root of 9121539108 is about 2089.4053777226.

The spelling of 9121539108 in words is "nine billion, one hundred twenty-one million, five hundred thirty-nine thousand, one hundred eight".