194829171093457 has 2 divisors, whose sum is σ = 194829171093458. Its totient is φ = 194829171093456.

The previous prime is 194829171093419. The next prime is 194829171093631. The reversal of 194829171093457 is 754390171928491.

It is a happy number.

194829171093457 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., 125513572384656 + 69315598708801 = 11203284^2 + 8325599^2 .

It is a cyclic number.

It is not a de Polignac number, because 194829171093457 - 2¹⁹ = 194829170569169 is a prime.

It is not a weakly prime, because it can be changed into another prime (194829171093857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97414585546728 + 97414585546729.

It is an arithmetic number, because the mean of its divisors is an integer number (97414585546729).

Almost surely, 2^{194829171093457} is an apocalyptic number.

It is an amenable number.

194829171093457 is a deficient number, since it is larger than the sum of its proper divisors (1).

194829171093457 is an equidigital number, since it uses as much as digits as its factorization.

194829171093457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 137168640, while the sum is 70.

The spelling of 194829171093457 in words is "one hundred ninety-four trillion, eight hundred twenty-nine billion, one hundred seventy-one million, ninety-three thousand, four hundred fifty-seven".