189836443 has 8 divisors (see below), whose sum is σ = 194447088. Its totient is φ = 185234784.

The previous prime is 189836441. The next prime is 189836459. The reversal of 189836443 is 344638981.

189836443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 189836443 - 2¹ = 189836441 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189836393 and 189836402.

It is not an unprimeable number, because it can be changed into a prime (189836441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62721 + ... + 65677.

It is an arithmetic number, because the mean of its divisors is an integer number (24305886).

Almost surely, 2^189836443 is an apocalyptic number.

189836443 is a deficient number, since it is larger than the sum of its proper divisors (4610645).

189836443 is a wasteful number, since it uses less digits than its factorization.

189836443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4493.

The product of its digits is 497664, while the sum is 46.

The square root of 189836443 is about 13778.1146388031. The cubic root of 189836443 is about 574.7247004748.

The spelling of 189836443 in words is "one hundred eighty-nine million, eight hundred thirty-six thousand, four hundred forty-three".