163441999 has 12 divisors (see below), whose sum is σ = 196684200. Its totient is φ = 135261168.

The previous prime is 163441991. The next prime is 163442033. The reversal of 163441999 is 999144361.

It is not a de Polignac number, because 163441999 - 2³ = 163441991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163441991) 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 in 11 ways as a sum of consecutive naturals, for example, 56089 + ... + 58930.

It is an arithmetic number, because the mean of its divisors is an integer number (16390350).

Almost surely, 2^163441999 is an apocalyptic number.

163441999 is a deficient number, since it is larger than the sum of its proper divisors (33242201).

163441999 is a wasteful number, since it uses less digits than its factorization.

163441999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115062 (or 115055 counting only the distinct ones).

The product of its digits is 209952, while the sum is 46.

The square root of 163441999 is about 12784.4436327906. The cubic root of 163441999 is about 546.7488628553.

The spelling of 163441999 in words is "one hundred sixty-three million, four hundred forty-one thousand, nine hundred ninety-nine".