188224161 has 8 divisors (see below), whose sum is σ = 251028960. Its totient is φ = 125451072.

The previous prime is 188224159. The next prime is 188224177. The reversal of 188224161 is 161422881.

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

It is not a de Polignac number, because 188224161 - 2¹ = 188224159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (188224121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18825 + ... + 27033.

It is an arithmetic number, because the mean of its divisors is an integer number (31378620).

Almost surely, 2^188224161 is an apocalyptic number.

It is an amenable number.

188224161 is a deficient number, since it is larger than the sum of its proper divisors (62804799).

188224161 is an equidigital number, since it uses as much as digits as its factorization.

188224161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15855.

The product of its digits is 6144, while the sum is 33.

The square root of 188224161 is about 13719.4810761923. The cubic root of 188224161 is about 573.0930257185.

The spelling of 188224161 in words is "one hundred eighty-eight million, two hundred twenty-four thousand, one hundred sixty-one".