4368381641 has 4 divisors (see below), whose sum is σ = 4704411012. Its totient is φ = 4032352272.

The previous prime is 4368381631. The next prime is 4368381643. The reversal of 4368381641 is 1461838634.

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 1169913616 + 3198468025 = 34204^2 + 56555^2 .

It is a de Polignac number, because none of the positive numbers 2^k-4368381641 is a prime.

It is a super-2 number, since 2×4368381641² = 38165516322851705762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4368381592 and 4368381601.

It is not an unprimeable number, because it can be changed into a prime (4368381643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168014666 + ... + 168014691.

It is an arithmetic number, because the mean of its divisors is an integer number (1176102753).

Almost surely, 2^4368381641 is an apocalyptic number.

It is an amenable number.

4368381641 is a deficient number, since it is larger than the sum of its proper divisors (336029371).

4368381641 is a wasteful number, since it uses less digits than its factorization.

4368381641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336029370.

The product of its digits is 331776, while the sum is 44.

The square root of 4368381641 is about 66093.7337498798. The cubic root of 4368381641 is about 1634.7080115888.

The spelling of 4368381641 in words is "four billion, three hundred sixty-eight million, three hundred eighty-one thousand, six hundred forty-one".