189999196 has 12 divisors (see below), whose sum is σ = 333163152. Its totient is φ = 94809728.

The previous prime is 189999179. The next prime is 189999197. The reversal of 189999196 is 691999981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189999197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45205 + ... + 49228.

It is an arithmetic number, because the mean of its divisors is an integer number (27763596).

Almost surely, 2^189999196 is an apocalyptic number.

It is an amenable number.

189999196 is a deficient number, since it is larger than the sum of its proper divisors (143163956).

189999196 is a wasteful number, since it uses less digits than its factorization.

189999196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94940 (or 94938 counting only the distinct ones).

The product of its digits is 2834352, while the sum is 61.

The square root of 189999196 is about 13784.0195879141. The cubic root of 189999196 is about 574.8888969963. Note that the first 4 decimals are identical.

The spelling of 189999196 in words is "one hundred eighty-nine million, nine hundred ninety-nine thousand, one hundred ninety-six".