191339041 has 2 divisors, whose sum is σ = 191339042. Its totient is φ = 191339040.

The previous prime is 191339039. The next prime is 191339117. The reversal of 191339041 is 140933191.

191339041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 150430225 + 40908816 = 12265^2 + 6396^2 .

It is a cyclic number.

It is not a de Polignac number, because 191339041 - 2¹ = 191339039 is a prime.

It is a super-2 number, since 2×191339041² = 73221257221599362, which contains 22 as substring.

Together with 191339039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 191338994 and 191339012.

It is not a weakly prime, because it can be changed into another prime (191339011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95669520 + 95669521.

It is an arithmetic number, because the mean of its divisors is an integer number (95669521).

Almost surely, 2^191339041 is an apocalyptic number.

It is an amenable number.

191339041 is a deficient number, since it is larger than the sum of its proper divisors (1).

191339041 is an equidigital number, since it uses as much as digits as its factorization.

191339041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 191339041 is about 13832.5355954720. The cubic root of 191339041 is about 576.2370754815.

The spelling of 191339041 in words is "one hundred ninety-one million, three hundred thirty-nine thousand, forty-one".