3644435313846 has 20 divisors (see below), whose sum is σ = 8166234685092. Its totient is φ = 1214811771228.

The previous prime is 3644435313821. The next prime is 3644435313847. The reversal of 3644435313846 is 6483135344463.

It is a happy number.

3644435313846 is a `hidden beast` number, since 3 + 64 + 4 + 4 + 3 + 531 + 3 + 8 + 46 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 3644435313792 and 3644435313801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3644435313847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11248256980 + ... + 11248257303.

Almost surely, 2^{3644435313846} is an apocalyptic number.

3644435313846 is an abundant number, since it is smaller than the sum of its proper divisors (4521799371246).

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

3644435313846 is a wasteful number, since it uses less digits than its factorization.

3644435313846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22496514297 (or 22496514288 counting only the distinct ones).

The product of its digits is 29859840, while the sum is 54.

The spelling of 3644435313846 in words is "three trillion, six hundred forty-four billion, four hundred thirty-five million, three hundred thirteen thousand, eight hundred forty-six".