163417823 has 2 divisors, whose sum is σ = 163417824. Its totient is φ = 163417822.

The previous prime is 163417811. The next prime is 163417861. The reversal of 163417823 is 328714361.

It is a weak prime.

It is an emirp because it is prime and its reverse (328714361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163417823 - 2²⁴ = 146640607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163417223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81708911 + 81708912.

It is an arithmetic number, because the mean of its divisors is an integer number (81708912).

Almost surely, 2^163417823 is an apocalyptic number.

163417823 is a deficient number, since it is larger than the sum of its proper divisors (1).

163417823 is an equidigital number, since it uses as much as digits as its factorization.

163417823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 35.

The square root of 163417823 is about 12783.4980736886. The cubic root of 163417823 is about 546.7219035417.

The spelling of 163417823 in words is "one hundred sixty-three million, four hundred seventeen thousand, eight hundred twenty-three".