163143504 has 80 divisors (see below), whose sum is σ = 470525440. Its totient is φ = 54120960.

The previous prime is 163143503. The next prime is 163143517. The reversal of 163143504 is 405341361.

163143504 is a `hidden beast` number, since 16 + 3 + 143 + 504 = 666.

163143504 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163143503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103329 + ... + 104895.

It is an arithmetic number, because the mean of its divisors is an integer number (5881568).

Almost surely, 2^163143504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 163143504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235262720).

163143504 is an abundant number, since it is smaller than the sum of its proper divisors (307381936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163143504 is a wasteful number, since it uses less digits than its factorization.

163143504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825 (or 1813 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 163143504 is about 12772.7641487659. The cubic root of 163143504 is about 546.4158165639.

Adding to 163143504 its reverse (405341361), we get a palindrome (568484865).

The spelling of 163143504 in words is "one hundred sixty-three million, one hundred forty-three thousand, five hundred four".