6444644362 has 8 divisors (see below), whose sum is σ = 10410579396. Its totient is φ = 2974451232.

The previous prime is 6444644357. The next prime is 6444644417. The reversal of 6444644362 is 2634464446.

It can be written as a sum of positive squares in 2 ways, for example, as 6435408841 + 9235521 = 80221^2 + 3039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123935443 + ... + 123935494.

Almost surely, 2^6444644362 is an apocalyptic number.

6444644362 is a deficient number, since it is larger than the sum of its proper divisors (3965935034).

6444644362 is a wasteful number, since it uses less digits than its factorization.

6444644362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247870952.

The product of its digits is 1327104, while the sum is 43.

The square root of 6444644362 is about 80278.5423509919. The cubic root of 6444644362 is about 1860.9426333498.

The spelling of 6444644362 in words is "six billion, four hundred forty-four million, six hundred forty-four thousand, three hundred sixty-two".