189943922 has 8 divisors (see below), whose sum is σ = 325618176. Its totient is φ = 81404532.

The previous prime is 189943921. The next prime is 189943973. The reversal of 189943922 is 229349981.

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

It is not an unprimeable number, because it can be changed into a prime (189943921) 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, 6783698 + ... + 6783725.

It is an arithmetic number, because the mean of its divisors is an integer number (40702272).

Almost surely, 2^189943922 is an apocalyptic number.

189943922 is a deficient number, since it is larger than the sum of its proper divisors (135674254).

189943922 is a wasteful number, since it uses less digits than its factorization.

189943922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13567432.

The product of its digits is 279936, while the sum is 47.

The square root of 189943922 is about 13782.0144391159. The cubic root of 189943922 is about 574.8331432677.

The spelling of 189943922 in words is "one hundred eighty-nine million, nine hundred forty-three thousand, nine hundred twenty-two".