163443004 has 12 divisors (see below), whose sum is σ = 287920528. Its totient is φ = 81180000.

The previous prime is 163443001. The next prime is 163443013. The reversal of 163443004 is 400344361.

It is a happy number.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 163443004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163443001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134697 + ... + 135904.

Almost surely, 2^163443004 is an apocalyptic number.

It is an amenable number.

163443004 is a deficient number, since it is larger than the sum of its proper divisors (124477524).

163443004 is a wasteful number, since it uses less digits than its factorization.

163443004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270756 (or 270754 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 163443004 is about 12784.4829383124. The cubic root of 163443004 is about 546.7499835005.

Adding to 163443004 its reverse (400344361), we get a palindrome (563787365).

The spelling of 163443004 in words is "one hundred sixty-three million, four hundred forty-three thousand, four".