3644201440 has 48 divisors (see below), whose sum is σ = 9392105520. Its totient is φ = 1325163520.

The previous prime is 3644201417. The next prime is 3644201479. The reversal of 3644201440 is 441024463.

It is a junction number, because it is equal to n+sod(n) for n = 3644201399 and 3644201408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1033525 + ... + 1037044.

It is an arithmetic number, because the mean of its divisors is an integer number (195668865).

Almost surely, 2^3644201440 is an apocalyptic number.

It is an amenable number.

3644201440 is an abundant number, since it is smaller than the sum of its proper divisors (5747904080).

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

3644201440 is a wasteful number, since it uses less digits than its factorization.

3644201440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070595 (or 2070587 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 3644201440 is about 60367.2215693252. The cubic root of 3644201440 is about 1538.8659554555.

The spelling of 3644201440 in words is "three billion, six hundred forty-four million, two hundred one thousand, four hundred forty".