9918514844 has 48 divisors (see below), whose sum is σ = 20196374016. Its totient is φ = 4174027200.

The previous prime is 9918514831. The next prime is 9918514849. The reversal of 9918514844 is 4484158199.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918514849) 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, 1073147 + ... + 1082349.

It is an arithmetic number, because the mean of its divisors is an integer number (420757792).

Almost surely, 2^9918514844 is an apocalyptic number.

It is an amenable number.

9918514844 is an abundant number, since it is smaller than the sum of its proper divisors (10277859172).

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

9918514844 is a wasteful number, since it uses less digits than its factorization.

9918514844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906 (or 9904 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 53.

The square root of 9918514844 is about 99591.7408423008. The cubic root of 9918514844 is about 2148.5669082562.

The spelling of 9918514844 in words is "nine billion, nine hundred eighteen million, five hundred fourteen thousand, eight hundred forty-four".