163859 has 2 divisors, whose sum is σ = 163860. Its totient is φ = 163858.
The previous prime is 163853. The next prime is 163861. The reversal of 163859 is 958361.
It is a strong prime.
It is an emirp because it is prime and its reverse (958361) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 163859 - 212 = 159763 is a prime.
Together with 163861, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (163853) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (5) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81929 + 81930.
It is an arithmetic number, because the mean of its divisors is an integer number (81930).
2163859 is an apocalyptic number.
163859 is a deficient number, since it is larger than the sum of its proper divisors (1).
163859 is an equidigital number, since it uses as much as digits as its factorization.
163859 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 6480, while the sum is 32.
The square root of 163859 is about 404.7950098507. The cubic root of 163859 is about 54.7213454165.
The spelling of 163859 in words is "one hundred sixty-three thousand, eight hundred fifty-nine".
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