4418393841 has 9 divisors (see below), whose sum is σ = 6382412491. Its totient is φ = 2945462952.

The previous prime is 4418393831. The next prime is 4418393869. The reversal of 4418393841 is 1483938144.

The square root of 4418393841 is 66471.

It is a perfect power (a square), and thus also a powerful number.

4418393841 is a `hidden beast` number, since 441 + 83 + 93 + 8 + 41 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3773030625 + 645363216 = 61425^2 + 25404^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 4418393841 - 2¹³ = 4418385649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4418393801) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 188335 + ... + 210491.

Almost surely, 2^4418393841 is an apocalyptic number.

4418393841 is the 66471-st square number.

4418393841 is the 33236-th centered octagonal number.

It is an amenable number.

4418393841 is a deficient number, since it is larger than the sum of its proper divisors (1964018650).

4418393841 is an frugal number, since it uses more digits than its factorization.

4418393841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44320 (or 22160 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The cubic root of 4418393841 is about 1640.9227705244.

The spelling of 4418393841 in words is "four billion, four hundred eighteen million, three hundred ninety-three thousand, eight hundred forty-one".