3644421984 has 120 divisors (see below), whose sum is σ = 12249368208. Its totient is φ = 1041258240.

The previous prime is 3644421959. The next prime is 3644422027. The reversal of 3644421984 is 4891244463.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 82287 + ... + 118574.

Almost surely, 2^3644421984 is an apocalyptic number.

It is an amenable number.

3644421984 is an abundant number, since it is smaller than the sum of its proper divisors (8604946224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3644421984 is a wasteful number, since it uses less digits than its factorization.

3644421984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200890 (or 200873 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 3644421984 is about 60369.0482283761. The cubic root of 3644421984 is about 1538.8969984529.

The spelling of 3644421984 in words is "three billion, six hundred forty-four million, four hundred twenty-one thousand, nine hundred eighty-four".