189843198 has 8 divisors (see below), whose sum is σ = 379686408. Its totient is φ = 63281064.

The previous prime is 189843169. The next prime is 189843211. The reversal of 189843198 is 891348981.

189843198 is nontrivially palindromic in base 5.

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

189843198 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 189843198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15820261 + ... + 15820272.

It is an arithmetic number, because the mean of its divisors is an integer number (47460801).

Almost surely, 2^189843198 is an apocalyptic number.

189843198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189843198 is a wasteful number, since it uses less digits than its factorization.

189843198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31640538.

The product of its digits is 497664, while the sum is 51.

The square root of 189843198 is about 13778.3597717580. The cubic root of 189843198 is about 574.7315172539.

The spelling of 189843198 in words is "one hundred eighty-nine million, eight hundred forty-three thousand, one hundred ninety-eight".