193845534170161 has 2 divisors, whose sum is σ = 193845534170162. Its totient is φ = 193845534170160.

The previous prime is 193845534170083. The next prime is 193845534170179. The reversal of 193845534170161 is 161071435548391.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 162931311447025 + 30914222723136 = 12764455^2 + 5560056^2 .

It is an emirp because it is prime and its reverse (161071435548391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 193845534170161 - 2⁷ = 193845534170033 is a prime.

It is a super-2 number, since 2×193845534170161² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 193845534170096 and 193845534170105.

It is not a weakly prime, because it can be changed into another prime (193845534170461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96922767085080 + 96922767085081.

It is an arithmetic number, because the mean of its divisors is an integer number (96922767085081).

Almost surely, 2^{193845534170161} is an apocalyptic number.

It is an amenable number.

193845534170161 is a deficient number, since it is larger than the sum of its proper divisors (1).

193845534170161 is an equidigital number, since it uses as much as digits as its factorization.

193845534170161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 193845534170161 in words is "one hundred ninety-three trillion, eight hundred forty-five billion, five hundred thirty-four million, one hundred seventy thousand, one hundred sixty-one".