204819011 has 4 divisors (see below), whose sum is σ = 206847024. Its totient is φ = 202791000.

The previous prime is 204818981. The next prime is 204819037. The reversal of 204819011 is 110918402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204819011 - 2²⁶ = 137710147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204819211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013855 + ... + 1014056.

It is an arithmetic number, because the mean of its divisors is an integer number (51711756).

Almost surely, 2^204819011 is an apocalyptic number.

204819011 is a deficient number, since it is larger than the sum of its proper divisors (2028013).

204819011 is a wasteful number, since it uses less digits than its factorization.

204819011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2028012.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 204819011 is about 14311.4992575900. The cubic root of 204819011 is about 589.4632780522.

It can be divided in two parts, 20481 and 9011, that added together give a palindrome (29492).

The spelling of 204819011 in words is "two hundred four million, eight hundred nineteen thousand, eleven".