9918888199 has 8 divisors (see below), whose sum is σ = 10821864960. Its totient is φ = 9016121400.

The previous prime is 9918888197. The next prime is 9918888209.

9918888199 is nontrivially palindromic in base 10.

9918888199 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9918888199 - 2¹ = 9918888197 is a prime.

It is a super-2 number, since 2×9918888199² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9918888197) by changing a digit.

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, 56064 + ... + 151594.

It is an arithmetic number, because the mean of its divisors is an integer number (1352733120).

Almost surely, 2^9918888199 is an apocalyptic number.

9918888199 is a deficient number, since it is larger than the sum of its proper divisors (902976761).

9918888199 is a wasteful number, since it uses less digits than its factorization.

9918888199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104981.

The product of its digits is 26873856, while the sum is 70.

The square root of 9918888199 is about 99593.6152521837. The cubic root of 9918888199 is about 2148.5938668666.

The spelling of 9918888199 in words is "nine billion, nine hundred eighteen million, eight hundred eighty-eight thousand, one hundred ninety-nine".