194851241017 has 2 divisors, whose sum is σ = 194851241018. Its totient is φ = 194851241016.

The previous prime is 194851240981. The next prime is 194851241023. The reversal of 194851241017 is 710142158491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153410088976 + 41441152041 = 391676^2 + 203571^2 .

It is a cyclic number.

It is not a de Polignac number, because 194851241017 - 2²³ = 194842852409 is a prime.

It is a super-2 number, since 2×194851241017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194851241317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97425620508 + 97425620509.

It is an arithmetic number, because the mean of its divisors is an integer number (97425620509).

Almost surely, 2^194851241017 is an apocalyptic number.

It is an amenable number.

194851241017 is a deficient number, since it is larger than the sum of its proper divisors (1).

194851241017 is an equidigital number, since it uses as much as digits as its factorization.

194851241017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 43.

The spelling of 194851241017 in words is "one hundred ninety-four billion, eight hundred fifty-one million, two hundred forty-one thousand, seventeen".