189445241 has 4 divisors (see below), whose sum is σ = 189537012. Its totient is φ = 189353472.

The previous prime is 189445211. The next prime is 189445261. The reversal of 189445241 is 142544981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 142544981 = 89 ⋅1601629.

It can be written as a sum of positive squares in 2 ways, for example, as 87516025 + 101929216 = 9355^2 + 10096^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189445241 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 189445195 and 189445204.

It is not an unprimeable number, because it can be changed into a prime (189445211) 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, 42716 + ... + 46941.

It is an arithmetic number, because the mean of its divisors is an integer number (47384253).

Almost surely, 2^189445241 is an apocalyptic number.

It is an amenable number.

189445241 is a deficient number, since it is larger than the sum of its proper divisors (91771).

189445241 is an equidigital number, since it uses as much as digits as its factorization.

189445241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91770.

The product of its digits is 46080, while the sum is 38.

The square root of 189445241 is about 13763.9108177872. The cubic root of 189445241 is about 574.3296444882.

The spelling of 189445241 in words is "one hundred eighty-nine million, four hundred forty-five thousand, two hundred forty-one".