9916666198 has 32 divisors (see below), whose sum is σ = 15615194112. Its totient is φ = 4717591200.

The previous prime is 9916666157. The next prime is 9916666213. The reversal of 9916666198 is 8916666199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081240 + ... + 1090372.

It is an arithmetic number, because the mean of its divisors is an integer number (487974816).

Almost surely, 2^9916666198 is an apocalyptic number.

9916666198 is a deficient number, since it is larger than the sum of its proper divisors (5698527914).

9916666198 is a wasteful number, since it uses less digits than its factorization.

9916666198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9460.

The product of its digits is 7558272, while the sum is 61.

The square root of 9916666198 is about 99582.4592887723. The cubic root of 9916666198 is about 2148.4334142645.

Subtracting from 9916666198 its reverse (8916666199), we obtain a palindrome (999999999).

The spelling of 9916666198 in words is "nine billion, nine hundred sixteen million, six hundred sixty-six thousand, one hundred ninety-eight".