204579000949 has 2 divisors, whose sum is σ = 204579000950. Its totient is φ = 204579000948.

The previous prime is 204579000911. The next prime is 204579000991. The reversal of 204579000949 is 949000975402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200272360324 + 4306640625 = 447518^2 + 65625^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204579000949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204579003949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102289500474 + 102289500475.

It is an arithmetic number, because the mean of its divisors is an integer number (102289500475).

Almost surely, 2^204579000949 is an apocalyptic number.

It is an amenable number.

204579000949 is a deficient number, since it is larger than the sum of its proper divisors (1).

204579000949 is an equidigital number, since it uses as much as digits as its factorization.

204579000949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 204579000949 in words is "two hundred four billion, five hundred seventy-nine million, nine hundred forty-nine", and thus it is an aban number.