189173164886 has 4 divisors (see below), whose sum is σ = 283759747332. Its totient is φ = 94586582442.

The previous prime is 189173164823. The next prime is 189173164903. The reversal of 189173164886 is 688461371981.

189173164886 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 688461371981 = 2297 ⋅299721973.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47293291220 + ... + 47293291223.

It is an arithmetic number, because the mean of its divisors is an integer number (70939936833).

Almost surely, 2^189173164886 is an apocalyptic number.

189173164886 is a deficient number, since it is larger than the sum of its proper divisors (94586582446).

189173164886 is an equidigital number, since it uses as much as digits as its factorization.

189173164886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94586582445.

The product of its digits is 13934592, while the sum is 62.

The spelling of 189173164886 in words is "one hundred eighty-nine billion, one hundred seventy-three million, one hundred sixty-four thousand, eight hundred eighty-six".