9937918998 has 112 divisors (see below), whose sum is σ = 26424542880. Its totient is φ = 2741413248.

The previous prime is 9937918993. The next prime is 9937919009. The reversal of 9937918998 is 8998197399.

9937918998 is a `hidden beast` number, since 99 + 379 + 1 + 89 + 98 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9937918993) 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 55 ways as a sum of consecutive naturals, for example, 279186 + ... + 312762.

Almost surely, 2^9937918998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9937918998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13212271440).

9937918998 is an abundant number, since it is smaller than the sum of its proper divisors (16486623882).

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

9937918998 is a wasteful number, since it uses less digits than its factorization.

9937918998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33633 (or 33618 counting only the distinct ones).

The product of its digits is 79361856, while the sum is 72.

The square root of 9937918998 is about 99689.1117324254. Note that the first 3 decimals coincide. The cubic root of 9937918998 is about 2149.9671167136.

The spelling of 9937918998 in words is "nine billion, nine hundred thirty-seven million, nine hundred eighteen thousand, nine hundred ninety-eight".