163998041 has 2 divisors, whose sum is σ = 163998042. Its totient is φ = 163998040.

The previous prime is 163998013. The next prime is 163998061. The reversal of 163998041 is 140899361.

163998041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153239641 + 10758400 = 12379^2 + 3280^2 .

It is a cyclic number.

It is not a de Polignac number, because 163998041 - 2¹⁰ = 163997017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163998041.

It is not a weakly prime, because it can be changed into another prime (163998061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81999020 + 81999021.

It is an arithmetic number, because the mean of its divisors is an integer number (81999021).

Almost surely, 2^163998041 is an apocalyptic number.

It is an amenable number.

163998041 is a deficient number, since it is larger than the sum of its proper divisors (1).

163998041 is an equidigital number, since it uses as much as digits as its factorization.

163998041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 163998041 is about 12806.1719885374. The cubic root of 163998041 is about 547.3681880026.

The spelling of 163998041 in words is "one hundred sixty-three million, nine hundred ninety-eight thousand, forty-one".