9898311888 has 160 divisors (see below), whose sum is σ = 29171347200. Its totient is φ = 3212352000.

The previous prime is 9898311887. The next prime is 9898311889. The reversal of 9898311888 is 8881138989.

It is an interprime number because it is at equal distance from previous prime (9898311887) and next prime (9898311889).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898311883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2659693 + ... + 2663411.

It is an arithmetic number, because the mean of its divisors is an integer number (182320920).

Almost surely, 2^9898311888 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 9898311888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14585673600).

9898311888 is an abundant number, since it is smaller than the sum of its proper divisors (19273035312).

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

9898311888 is a wasteful number, since it uses less digits than its factorization.

9898311888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3898 (or 3886 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 63.

The square root of 9898311888 is about 99490.2602670231. The cubic root of 9898311888 is about 2147.1071161781.

The spelling of 9898311888 in words is "nine billion, eight hundred ninety-eight million, three hundred eleven thousand, eight hundred eighty-eight".