189493443 has 6 divisors (see below), whose sum is σ = 273712764. Its totient is φ = 126328956.

The previous prime is 189493433. The next prime is 189493457. The reversal of 189493443 is 344394981.

It is a happy number.

189493443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189493443 - 2⁶ = 189493379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189493433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10527405 + ... + 10527422.

It is an arithmetic number, because the mean of its divisors is an integer number (45618794).

Almost surely, 2^189493443 is an apocalyptic number.

189493443 is a deficient number, since it is larger than the sum of its proper divisors (84219321).

189493443 is a wasteful number, since it uses less digits than its factorization.

189493443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21054833 (or 21054830 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 189493443 is about 13765.6617349113. The cubic root of 189493443 is about 574.3783507173.

The spelling of 189493443 in words is "one hundred eighty-nine million, four hundred ninety-three thousand, four hundred forty-three".