189388222 has 4 divisors (see below), whose sum is σ = 284082336. Its totient is φ = 94694110.

The previous prime is 189388217. The next prime is 189388247. The reversal of 189388222 is 222883981.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 47347054 + ... + 47347057.

It is an arithmetic number, because the mean of its divisors is an integer number (71020584).

Almost surely, 2^189388222 is an apocalyptic number.

189388222 is a deficient number, since it is larger than the sum of its proper divisors (94694114).

189388222 is an equidigital number, since it uses as much as digits as its factorization.

189388222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94694113.

The product of its digits is 110592, while the sum is 43.

The square root of 189388222 is about 13761.8393392744. The cubic root of 189388222 is about 574.2720183587.

The spelling of 189388222 in words is "one hundred eighty-nine million, three hundred eighty-eight thousand, two hundred twenty-two".