204541164 has 18 divisors (see below), whose sum is σ = 517034700. Its totient is φ = 68180376.

The previous prime is 204541163. The next prime is 204541171. The reversal of 204541164 is 461145402.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (204541163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2840814 + ... + 2840885.

It is an arithmetic number, because the mean of its divisors is an integer number (28724150).

Almost surely, 2^204541164 is an apocalyptic number.

It is an amenable number.

204541164 is an abundant number, since it is smaller than the sum of its proper divisors (312493536).

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

204541164 is a wasteful number, since it uses less digits than its factorization.

204541164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5681709 (or 5681704 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 204541164 is about 14301.7888391627. The cubic root of 204541164 is about 589.1966121842.

Adding to 204541164 its reverse (461145402), we get a palindrome (665686566).

The spelling of 204541164 in words is "two hundred four million, five hundred forty-one thousand, one hundred sixty-four".