9481998144 has 112 divisors (see below), whose sum is σ = 25471087488. Its totient is φ = 3112747008.

The previous prime is 9481998131. The next prime is 9481998167. The reversal of 9481998144 is 4418991849.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3621924 + ... + 3624540.

It is an arithmetic number, because the mean of its divisors is an integer number (227420424).

Almost surely, 2^9481998144 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 9481998144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12735543744).

9481998144 is an abundant number, since it is smaller than the sum of its proper divisors (15989089344).

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

9481998144 is a wasteful number, since it uses less digits than its factorization.

9481998144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912 (or 2902 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 57.

The square root of 9481998144 is about 97375.5520857263. The cubic root of 9481998144 is about 2116.5731798199.

The spelling of 9481998144 in words is "nine billion, four hundred eighty-one million, nine hundred ninety-eight thousand, one hundred forty-four".