8281144493 has 2 divisors, whose sum is σ = 8281144494. Its totient is φ = 8281144492.

The previous prime is 8281144369. The next prime is 8281144507. The reversal of 8281144493 is 3944411828.

8281144493 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., 8140911529 + 140232964 = 90227^2 + 11842^2 .

It is a cyclic number.

It is not a de Polignac number, because 8281144493 - 2¹⁶ = 8281078957 is a prime.

It is a super-2 number, since 2×8281144493² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8281141493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4140572246 + 4140572247.

It is an arithmetic number, because the mean of its divisors is an integer number (4140572247).

Almost surely, 2^8281144493 is an apocalyptic number.

It is an amenable number.

8281144493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8281144493 is an equidigital number, since it uses as much as digits as its factorization.

8281144493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 221184, while the sum is 44.

The square root of 8281144493 is about 91000.7939141192. The cubic root of 8281144493 is about 2023.1594915691.

The spelling of 8281144493 in words is "eight billion, two hundred eighty-one million, one hundred forty-four thousand, four hundred ninety-three".