4442768345 has 4 divisors (see below), whose sum is σ = 5331322020. Its totient is φ = 3554214672.

The previous prime is 4442768339. The next prime is 4442768399. The reversal of 4442768345 is 5438672444.

4442768345 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 1347403849 + 3095364496 = 36707^2 + 55636^2 .

It is a cyclic number.

It is not a de Polignac number, because 4442768345 - 2⁴ = 4442768329 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4442768345.

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, 444276830 + ... + 444276839.

It is an arithmetic number, because the mean of its divisors is an integer number (1332830505).

Almost surely, 2^4442768345 is an apocalyptic number.

It is an amenable number.

4442768345 is a deficient number, since it is larger than the sum of its proper divisors (888553675).

4442768345 is an equidigital number, since it uses as much as digits as its factorization.

4442768345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888553674.

The product of its digits is 2580480, while the sum is 47.

The square root of 4442768345 is about 66654.0947354324. The cubic root of 4442768345 is about 1643.9346760658.

The spelling of 4442768345 in words is "four billion, four hundred forty-two million, seven hundred sixty-eight thousand, three hundred forty-five".