9774198166 has 8 divisors (see below), whose sum is σ = 15057548640. Its totient is φ = 4755015288.

The previous prime is 9774198089. The next prime is 9774198167. The reversal of 9774198166 is 6618914779.

9774198166 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 a self number, because there is not a number n which added to its sum of digits gives 9774198166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9774198167) 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 3 ways as a sum of consecutive naturals, for example, 66041806 + ... + 66041953.

It is an arithmetic number, because the mean of its divisors is an integer number (1882193580).

Almost surely, 2^9774198166 is an apocalyptic number.

9774198166 is a deficient number, since it is larger than the sum of its proper divisors (5283350474).

9774198166 is a wasteful number, since it uses less digits than its factorization.

9774198166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132083798.

The product of its digits is 4572288, while the sum is 58.

The square root of 9774198166 is about 98864.5445344285. The cubic root of 9774198166 is about 2138.0952397906.

The spelling of 9774198166 in words is "nine billion, seven hundred seventy-four million, one hundred ninety-eight thousand, one hundred sixty-six".