204923081 has 4 divisors (see below), whose sum is σ = 223552464. Its totient is φ = 186293700.

The previous prime is 204923071. The next prime is 204923087. The reversal of 204923081 is 180329402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204923081 - 2¹⁰ = 204922057 is a prime.

It is a super-2 number, since 2×204923081² = 83986938253065122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204923087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9314675 + ... + 9314696.

It is an arithmetic number, because the mean of its divisors is an integer number (55888116).

Almost surely, 2^204923081 is an apocalyptic number.

It is an amenable number.

204923081 is a deficient number, since it is larger than the sum of its proper divisors (18629383).

204923081 is a wasteful number, since it uses less digits than its factorization.

204923081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18629382.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 204923081 is about 14315.1346832644. The cubic root of 204923081 is about 589.5630979793.

The spelling of 204923081 in words is "two hundred four million, nine hundred twenty-three thousand, eighty-one".