2004521812 has 36 divisors (see below), whose sum is σ = 3757696320. Its totient is φ = 935293392.

The previous prime is 2004521807. The next prime is 2004521821. The reversal of 2004521812 is 2181254002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86389 + ... + 107107.

Almost surely, 2^2004521812 is an apocalyptic number.

It is an amenable number.

2004521812 is a deficient number, since it is larger than the sum of its proper divisors (1753174508).

2004521812 is a wasteful number, since it uses less digits than its factorization.

2004521812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20828 (or 20807 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 2004521812 is about 44771.8864020716. The cubic root of 2004521812 is about 1260.8698562202.

Adding to 2004521812 its reverse (2181254002), we get a palindrome (4185775814).

The spelling of 2004521812 in words is "two billion, four million, five hundred twenty-one thousand, eight hundred twelve".