189009241 has 2 divisors, whose sum is σ = 189009242. Its totient is φ = 189009240.

The previous prime is 189009217. The next prime is 189009287. The reversal of 189009241 is 142900981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188375625 + 633616 = 13725^2 + 796^2 .

It is a cyclic number.

It is not a de Polignac number, because 189009241 - 2⁷ = 189009113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 189009197 and 189009206.

It is not a weakly prime, because it can be changed into another prime (189009941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94504620 + 94504621.

It is an arithmetic number, because the mean of its divisors is an integer number (94504621).

Almost surely, 2^189009241 is an apocalyptic number.

It is an amenable number.

189009241 is a deficient number, since it is larger than the sum of its proper divisors (1).

189009241 is an equidigital number, since it uses as much as digits as its factorization.

189009241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 189009241 is about 13748.0631726800. The cubic root of 189009241 is about 573.8887077994. Note that the first 3 decimals are identical.

The spelling of 189009241 in words is "one hundred eighty-nine million, nine thousand, two hundred forty-one".