2004155441 has 2 divisors, whose sum is σ = 2004155442. Its totient is φ = 2004155440.

The previous prime is 2004155429. The next prime is 2004155459. The reversal of 2004155441 is 1445514002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1948339600 + 55815841 = 44140^2 + 7471^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2004155441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2004155441.

It is not a weakly prime, because it can be changed into another prime (2004155941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1002077720 + 1002077721.

It is an arithmetic number, because the mean of its divisors is an integer number (1002077721).

Almost surely, 2^2004155441 is an apocalyptic number.

It is an amenable number.

2004155441 is a deficient number, since it is larger than the sum of its proper divisors (1).

2004155441 is an equidigital number, since it uses as much as digits as its factorization.

2004155441 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 2004155441 is about 44767.7946854656. The cubic root of 2004155441 is about 1260.7930341915.

Adding to 2004155441 its reverse (1445514002), we get a palindrome (3449669443).

The spelling of 2004155441 in words is "two billion, four million, one hundred fifty-five thousand, four hundred forty-one".