9001019980 has 24 divisors (see below), whose sum is σ = 18953661888. Its totient is φ = 3590594688.

The previous prime is 9001019957. The next prime is 9001019981. The reversal of 9001019980 is 899101009.

It is not an unprimeable number, because it can be changed into a prime (9001019981) 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, 605809 + ... + 620488.

It is an arithmetic number, because the mean of its divisors is an integer number (789735912).

Almost surely, 2^9001019980 is an apocalyptic number.

It is an amenable number.

9001019980 is an abundant number, since it is smaller than the sum of its proper divisors (9952641908).

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

9001019980 is a wasteful number, since it uses less digits than its factorization.

9001019980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226673 (or 1226671 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 37.

The square root of 9001019980 is about 94873.7054193626. The cubic root of 9001019980 is about 2080.1623994872.

The spelling of 9001019980 in words is "nine billion, one million, nineteen thousand, nine hundred eighty".