2004637109 has 2 divisors, whose sum is σ = 2004637110. Its totient is φ = 2004637108.

The previous prime is 2004637079. The next prime is 2004637111. The reversal of 2004637109 is 9017364002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1956292900 + 48344209 = 44230^2 + 6953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004637109 is a prime.

It is a Sophie Germain prime.

Together with 2004637111, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2004634109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002318554 + 1002318555.

It is an arithmetic number, because the mean of its divisors is an integer number (1002318555).

Almost surely, 2^2004637109 is an apocalyptic number.

It is an amenable number.

2004637109 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004637109 is an equidigital number, since it uses as much as digits as its factorization.

2004637109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 2004637109 is about 44773.1739884498. The cubic root of 2004637109 is about 1260.8940301859.

The spelling of 2004637109 in words is "two billion, four million, six hundred thirty-seven thousand, one hundred nine".