2004082609 has 2 divisors, whose sum is σ = 2004082610. Its totient is φ = 2004082608.

The previous prime is 2004082603. The next prime is 2004082649. The reversal of 2004082609 is 9062804002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1237069584 + 767013025 = 35172^2 + 27695^2 .

It is a cyclic number.

It is not a de Polignac number, because 2004082609 - 2³ = 2004082601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2004082601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002041304 + 1002041305.

It is an arithmetic number, because the mean of its divisors is an integer number (1002041305).

Almost surely, 2^2004082609 is an apocalyptic number.

It is an amenable number.

2004082609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004082609 is an equidigital number, since it uses as much as digits as its factorization.

2004082609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 2004082609 is about 44766.9812361745. The cubic root of 2004082609 is about 1260.7777613923. Note that the first 4 decimals are identical.

The spelling of 2004082609 in words is "two billion, four million, eighty-two thousand, six hundred nine".