9441418081 has 2 divisors, whose sum is σ = 9441418082. Its totient is φ = 9441418080.

The previous prime is 9441418073. The next prime is 9441418093. The reversal of 9441418081 is 1808141449.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8946133056 + 495285025 = 94584^2 + 22255^2 .

It is an emirp because it is prime and its reverse (1808141449) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9441418081 - 2³ = 9441418073 is a prime.

It is a super-2 number, since 2×9441418081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9441418381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4720709040 + 4720709041.

It is an arithmetic number, because the mean of its divisors is an integer number (4720709041).

Almost surely, 2^9441418081 is an apocalyptic number.

It is an amenable number.

9441418081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9441418081 is an equidigital number, since it uses as much as digits as its factorization.

9441418081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 9441418081 is about 97166.9598217419. The cubic root of 9441418081 is about 2113.5494326986.

The spelling of 9441418081 in words is "nine billion, four hundred forty-one million, four hundred eighteen thousand, eighty-one".