3644929472 has 56 divisors (see below), whose sum is σ = 7678033920. Its totient is φ = 1710858240.

The previous prime is 3644929451. The next prime is 3644929507. The reversal of 3644929472 is 2749294463.

It is a self number, because there is not a number n which added to its sum of digits gives 3644929472.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 440897 + ... + 449087.

Almost surely, 2^3644929472 is an apocalyptic number.

3644929472 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3644929472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3839016960).

3644929472 is an abundant number, since it is smaller than the sum of its proper divisors (4033104448).

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

3644929472 is a wasteful number, since it uses less digits than its factorization.

3644929472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8629 (or 8619 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 50.

The square root of 3644929472 is about 60373.2512955862. The cubic root of 3644929472 is about 1538.9684259217.

The spelling of 3644929472 in words is "three billion, six hundred forty-four million, nine hundred twenty-nine thousand, four hundred seventy-two".