9000081944 has 64 divisors (see below), whose sum is σ = 19926466560. Its totient is φ = 3729294720.

The previous prime is 9000081943. The next prime is 9000081977. The reversal of 9000081944 is 4491800009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9000081943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2840249 + ... + 2843415.

It is an arithmetic number, because the mean of its divisors is an integer number (311351040).

Almost surely, 2^9000081944 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 9000081944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9963233280).

9000081944 is an abundant number, since it is smaller than the sum of its proper divisors (10926384616).

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

9000081944 is a wasteful number, since it uses less digits than its factorization.

9000081944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848 (or 4844 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 9000081944 is about 94868.7616868693. The cubic root of 9000081944 is about 2080.0901360101.

The spelling of 9000081944 in words is "nine billion, eighty-one thousand, nine hundred forty-four".