168164392841 has 2 divisors, whose sum is σ = 168164392842. Its totient is φ = 168164392840.

The previous prime is 168164392789. The next prime is 168164392897. The reversal of 168164392841 is 148293461861.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134398492816 + 33765900025 = 366604^2 + 183755^2 .

It is an emirp because it is prime and its reverse (148293461861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168164392841 is a prime.

It is not a weakly prime, because it can be changed into another prime (168164391841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84082196420 + 84082196421.

It is an arithmetic number, because the mean of its divisors is an integer number (84082196421).

Almost surely, 2^168164392841 is an apocalyptic number.

It is an amenable number.

168164392841 is a deficient number, since it is larger than the sum of its proper divisors (1).

168164392841 is an equidigital number, since it uses as much as digits as its factorization.

168164392841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1990656, while the sum is 53.

The spelling of 168164392841 in words is "one hundred sixty-eight billion, one hundred sixty-four million, three hundred ninety-two thousand, eight hundred forty-one".