189689219 has 4 divisors (see below), whose sum is σ = 189763896. Its totient is φ = 189614544.

The previous prime is 189689197. The next prime is 189689233. The reversal of 189689219 is 912986981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189689219 is a prime.

It is a super-2 number, since 2×189689219² = 71963999609659922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189689249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33389 + ... + 38654.

It is an arithmetic number, because the mean of its divisors is an integer number (47440974).

Almost surely, 2^189689219 is an apocalyptic number.

189689219 is a deficient number, since it is larger than the sum of its proper divisors (74677).

189689219 is an equidigital number, since it uses as much as digits as its factorization.

189689219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74676.

The product of its digits is 559872, while the sum is 53.

The square root of 189689219 is about 13772.7709267235. The cubic root of 189689219 is about 574.5760898238.

The spelling of 189689219 in words is "one hundred eighty-nine million, six hundred eighty-nine thousand, two hundred nineteen".