4644681444 has 72 divisors (see below), whose sum is σ = 12804005760. Its totient is φ = 1411031232.

The previous prime is 4644681443. The next prime is 4644681449. The reversal of 4644681444 is 4441864464.

4644681444 is a `hidden beast` number, since 46 + 4 + 468 + 144 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 4644681444.

It is not an unprimeable number, because it can be changed into a prime (4644681443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25842 + ... + 99785.

Almost surely, 2^4644681444 is an apocalyptic number.

It is an amenable number.

4644681444 is an abundant number, since it is smaller than the sum of its proper divisors (8159324316).

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

4644681444 is a wasteful number, since it uses less digits than its factorization.

4644681444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125729 (or 125724 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 45.

The square root of 4644681444 is about 68151.8997827647. The cubic root of 4644681444 is about 1668.4709304656.

The spelling of 4644681444 in words is "four billion, six hundred forty-four million, six hundred eighty-one thousand, four hundred forty-four".