204516389 has 8 divisors (see below), whose sum is σ = 254981568. Its totient is φ = 159363360.

The previous prime is 204516379. The next prime is 204516401. The reversal of 204516389 is 983615402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204516389 - 2¹² = 204512293 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 (204516349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327952 + ... + 1328105.

It is an arithmetic number, because the mean of its divisors is an integer number (31872696).

Almost surely, 2^204516389 is an apocalyptic number.

It is an amenable number.

204516389 is a deficient number, since it is larger than the sum of its proper divisors (50465179).

204516389 is a wasteful number, since it uses less digits than its factorization.

204516389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2656075.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 204516389 is about 14300.9226625417. The cubic root of 204516389 is about 589.1728224570.

The spelling of 204516389 in words is "two hundred four million, five hundred sixteen thousand, three hundred eighty-nine".