4438651668 has 48 divisors (see below), whose sum is σ = 11313007104. Its totient is φ = 1343305440.

The previous prime is 4438651667. The next prime is 4438651681. The reversal of 4438651668 is 8661568344.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 4438651668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4438651661) 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 15 ways as a sum of consecutive naturals, for example, 82521 + ... + 125247.

It is an arithmetic number, because the mean of its divisors is an integer number (235687648).

Almost surely, 2^4438651668 is an apocalyptic number.

It is an amenable number.

4438651668 is an abundant number, since it is smaller than the sum of its proper divisors (6874355436).

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

4438651668 is a wasteful number, since it uses less digits than its factorization.

4438651668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43532 (or 43530 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 4438651668 is about 66623.2066775534. The cubic root of 4438651668 is about 1643.4267615633.

The spelling of 4438651668 in words is "four billion, four hundred thirty-eight million, six hundred fifty-one thousand, six hundred sixty-eight".