163204004 has 6 divisors (see below), whose sum is σ = 285607014. Its totient is φ = 81602000.

The previous prime is 163203991. The next prime is 163204009. The reversal of 163204004 is 400402361.

It is a happy number.

163204004 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 158709604 + 4494400 = 12598^2 + 2120^2 .

It is not an unprimeable number, because it can be changed into a prime (163204009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20400497 + ... + 20400504.

It is an arithmetic number, because the mean of its divisors is an integer number (47601169).

Almost surely, 2^163204004 is an apocalyptic number.

It is an amenable number.

163204004 is a deficient number, since it is larger than the sum of its proper divisors (122403010).

163204004 is a wasteful number, since it uses less digits than its factorization.

163204004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40801005 (or 40801003 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 163204004 is about 12775.1322498047. The cubic root of 163204004 is about 546.4833523438.

Adding to 163204004 its reverse (400402361), we get a palindrome (563606365).

The spelling of 163204004 in words is "one hundred sixty-three million, two hundred four thousand, four".