9898945632 has 96 divisors (see below), whose sum is σ = 28917272160. Its totient is φ = 3294466560.

The previous prime is 9898945631. The next prime is 9898945633. The reversal of 9898945632 is 2365498989.

9898945632 is a `hidden beast` number, since 98 + 98 + 9 + 456 + 3 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (9898945631) and next prime (9898945633).

It is a tau number, because it is divible by the number of its divisors (96).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 9898945632.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9898945631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 562438 + ... + 579770.

It is an arithmetic number, because the mean of its divisors is an integer number (301221585).

Almost surely, 2^9898945632 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 9898945632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14458636080).

9898945632 is an abundant number, since it is smaller than the sum of its proper divisors (19018326528).

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

9898945632 is a wasteful number, since it uses less digits than its factorization.

9898945632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18013 (or 17999 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The square root of 9898945632 is about 99493.4451710262. The cubic root of 9898945632 is about 2147.1529383758.

The spelling of 9898945632 in words is "nine billion, eight hundred ninety-eight million, nine hundred forty-five thousand, six hundred thirty-two".