168384641 has 2 divisors, whose sum is σ = 168384642. Its totient is φ = 168384640.

The previous prime is 168384613. The next prime is 168384659. The reversal of 168384641 is 146483861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165508225 + 2876416 = 12865^2 + 1696^2 .

It is an emirp because it is prime and its reverse (146483861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168384641 - 2¹⁰ = 168383617 is a prime.

It is equal to p_9417749 and since 168384641 and 9417749 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (168384611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84192320 + 84192321.

It is an arithmetic number, because the mean of its divisors is an integer number (84192321).

Almost surely, 2^168384641 is an apocalyptic number.

It is an amenable number.

168384641 is a deficient number, since it is larger than the sum of its proper divisors (1).

168384641 is an equidigital number, since it uses as much as digits as its factorization.

168384641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 41.

The square root of 168384641 is about 12976.3107623084. The cubic root of 168384641 is about 552.2056235712.

The spelling of 168384641 in words is "one hundred sixty-eight million, three hundred eighty-four thousand, six hundred forty-one".