8453397481 has 2 divisors, whose sum is σ = 8453397482. Its totient is φ = 8453397480.

The previous prime is 8453397467. The next prime is 8453397493. The reversal of 8453397481 is 1847933548.

8453397481 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8453147481 + 250000 = 91941^2 + 500^2 .

It is a cyclic number.

It is not a de Polignac number, because 8453397481 - 2¹³ = 8453389289 is a prime.

It is a super-2 number, since 2×8453397481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8453397401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4226698740 + 4226698741.

It is an arithmetic number, because the mean of its divisors is an integer number (4226698741).

Almost surely, 2^8453397481 is an apocalyptic number.

It is an amenable number.

8453397481 is a deficient number, since it is larger than the sum of its proper divisors (1).

8453397481 is an equidigital number, since it uses as much as digits as its factorization.

8453397481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 52.

The square root of 8453397481 is about 91942.3595574967. The cubic root of 8453397481 is about 2037.0909999725.

The spelling of 8453397481 in words is "eight billion, four hundred fifty-three million, three hundred ninety-seven thousand, four hundred eighty-one".