1004041665 has 72 divisors (see below), whose sum is σ = 1933672104. Its totient is φ = 481536000.

The previous prime is 1004041603. The next prime is 1004041673. The reversal of 1004041665 is 5661404001.

It can be written as a sum of positive squares in 4 ways, for example, as 2509056 + 1001532609 = 1584^2 + 31647^2 .

It is not a de Polignac number, because 1004041665 - 2⁷ = 1004041537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 527215 + ... + 529115.

It is an arithmetic number, because the mean of its divisors is an integer number (26856557).

Almost surely, 2^1004041665 is an apocalyptic number.

1004041665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1004041665 is a deficient number, since it is larger than the sum of its proper divisors (929630439).

1004041665 is a wasteful number, since it uses less digits than its factorization.

1004041665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2017 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1004041665 is about 31686.6164965589. The cubic root of 1004041665 is about 1001.3454107249.

Adding to 1004041665 its reverse (5661404001), we get a palindrome (6665445666).

The spelling of 1004041665 in words is "one billion, four million, forty-one thousand, six hundred sixty-five".