205341609 has 8 divisors (see below), whose sum is σ = 298678752. Its totient is φ = 124449440.

The previous prime is 205341581. The next prime is 205341611. The reversal of 205341609 is 906143502.

205341609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 205341609 - 2¹⁵ = 205308841 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205341629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3111204 + ... + 3111269.

It is an arithmetic number, because the mean of its divisors is an integer number (37334844).

Almost surely, 2^205341609 is an apocalyptic number.

It is an amenable number.

205341609 is a deficient number, since it is larger than the sum of its proper divisors (93337143).

205341609 is a wasteful number, since it uses less digits than its factorization.

205341609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6222487.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 205341609 is about 14329.7456013706. The cubic root of 205341609 is about 589.9641929816.

The spelling of 205341609 in words is "two hundred five million, three hundred forty-one thousand, six hundred nine".