9918888722 has 16 divisors (see below), whose sum is σ = 15249669120. Its totient is φ = 4836989808.

The previous prime is 9918888709. The next prime is 9918888739. The reversal of 9918888722 is 2278888199.

9918888722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315953 + ... + 345924.

It is an arithmetic number, because the mean of its divisors is an integer number (953104320).

Almost surely, 2^9918888722 is an apocalyptic number.

9918888722 is a deficient number, since it is larger than the sum of its proper divisors (5330780398).

9918888722 is a wasteful number, since it uses less digits than its factorization.

9918888722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662065.

The product of its digits is 9289728, while the sum is 62.

The square root of 9918888722 is about 99593.6178778540. The cubic root of 9918888722 is about 2148.5939046301.

The spelling of 9918888722 in words is "nine billion, nine hundred eighteen million, eight hundred eighty-eight thousand, seven hundred twenty-two".