8541331481 has 2 divisors, whose sum is σ = 8541331482. Its totient is φ = 8541331480.

The previous prime is 8541331433. The next prime is 8541331499. The reversal of 8541331481 is 1841331458.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8534803456 + 6528025 = 92384^2 + 2555^2 .

It is a cyclic number.

It is not a de Polignac number, because 8541331481 - 2²² = 8537137177 is a prime.

It is a super-2 number, since 2×8541331481² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (8541331181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4270665740 + 4270665741.

It is an arithmetic number, because the mean of its divisors is an integer number (4270665741).

Almost surely, 2^8541331481 is an apocalyptic number.

It is an amenable number.

8541331481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8541331481 is an equidigital number, since it uses as much as digits as its factorization.

8541331481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46080, while the sum is 38.

The square root of 8541331481 is about 92419.3241751962. The cubic root of 8541331481 is about 2044.1300636858.

The spelling of 8541331481 in words is "eight billion, five hundred forty-one million, three hundred thirty-one thousand, four hundred eighty-one".