194137241 has 2 divisors, whose sum is σ = 194137242. Its totient is φ = 194137240.

The previous prime is 194137201. The next prime is 194137243. The reversal of 194137241 is 142731491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 167055625 + 27081616 = 12925^2 + 5204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194137241 is a prime.

Together with 194137243, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 194137198 and 194137207.

It is not a weakly prime, because it can be changed into another prime (194137243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97068620 + 97068621.

It is an arithmetic number, because the mean of its divisors is an integer number (97068621).

Almost surely, 2^194137241 is an apocalyptic number.

It is an amenable number.

194137241 is a deficient number, since it is larger than the sum of its proper divisors (1).

194137241 is an equidigital number, since it uses as much as digits as its factorization.

194137241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 194137241 is about 13933.3140709596. The cubic root of 194137241 is about 579.0325140856.

The spelling of 194137241 in words is "one hundred ninety-four million, one hundred thirty-seven thousand, two hundred forty-one".