163727329 has 2 divisors, whose sum is σ = 163727330. Its totient is φ = 163727328.

The previous prime is 163727303. The next prime is 163727341. The reversal of 163727329 is 923727361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157452304 + 6275025 = 12548^2 + 2505^2 .

It is an emirp because it is prime and its reverse (923727361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163727329 - 2²³ = 155338721 is a prime.

It is a super-2 number, since 2×163727329² = 53613276522948482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163727291 and 163727300.

It is not a weakly prime, because it can be changed into another prime (163727129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81863664 + 81863665.

It is an arithmetic number, because the mean of its divisors is an integer number (81863665).

Almost surely, 2^163727329 is an apocalyptic number.

It is an amenable number.

163727329 is a deficient number, since it is larger than the sum of its proper divisors (1).

163727329 is an equidigital number, since it uses as much as digits as its factorization.

163727329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 95256, while the sum is 40.

The square root of 163727329 is about 12795.5980321359. The cubic root of 163727329 is about 547.0668414253.

The spelling of 163727329 in words is "one hundred sixty-three million, seven hundred twenty-seven thousand, three hundred twenty-nine".