191285041 has 2 divisors, whose sum is σ = 191285042. Its totient is φ = 191285040.

The previous prime is 191285033. The next prime is 191285047. The reversal of 191285041 is 140582191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167314225 + 23970816 = 12935^2 + 4896^2 .

It is a cyclic number.

It is not a de Polignac number, because 191285041 - 2³ = 191285033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191284994 and 191285012.

It is not a weakly prime, because it can be changed into another prime (191285047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95642520 + 95642521.

It is an arithmetic number, because the mean of its divisors is an integer number (95642521).

Almost surely, 2^191285041 is an apocalyptic number.

It is an amenable number.

191285041 is a deficient number, since it is larger than the sum of its proper divisors (1).

191285041 is an equidigital number, since it uses as much as digits as its factorization.

191285041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 31.

The square root of 191285041 is about 13830.5835379423. The cubic root of 191285041 is about 576.1828615416.

The spelling of 191285041 in words is "one hundred ninety-one million, two hundred eighty-five thousand, forty-one".