4448363681 has 4 divisors (see below), whose sum is σ = 4462396692. Its totient is φ = 4434330672.

The previous prime is 4448363677. The next prime is 4448363683. The reversal of 4448363681 is 1863638444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1231659025 + 3216704656 = 35095^2 + 56716^2 .

It is a cyclic number.

It is not a de Polignac number, because 4448363681 - 2² = 4448363677 is a prime.

It is a super-2 number, since 2×4448363681² = 39575878876879739522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4448363683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7016030 + ... + 7016663.

It is an arithmetic number, because the mean of its divisors is an integer number (1115599173).

Almost surely, 2^4448363681 is an apocalyptic number.

It is an amenable number.

4448363681 is a deficient number, since it is larger than the sum of its proper divisors (14033011).

4448363681 is a wasteful number, since it uses less digits than its factorization.

4448363681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033010.

The product of its digits is 1327104, while the sum is 47.

The square root of 4448363681 is about 66696.0544635138. The cubic root of 4448363681 is about 1644.6245243247.

The spelling of 4448363681 in words is "four billion, four hundred forty-eight million, three hundred sixty-three thousand, six hundred eighty-one".