8081487493 has 4 divisors (see below), whose sum is σ = 8506828960. Its totient is φ = 7656146028.

The previous prime is 8081487451. The next prime is 8081487503. The reversal of 8081487493 is 3947841808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8081487493 - 2¹⁷ = 8081356421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8081487493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8081487593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212670705 + ... + 212670742.

It is an arithmetic number, because the mean of its divisors is an integer number (2126707240).

Almost surely, 2^8081487493 is an apocalyptic number.

It is an amenable number.

8081487493 is a deficient number, since it is larger than the sum of its proper divisors (425341467).

8081487493 is a wasteful number, since it uses less digits than its factorization.

8081487493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425341466.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 8081487493 is about 89897.0939074228. The cubic root of 8081487493 is about 2006.7676977194.

The spelling of 8081487493 in words is "eight billion, eighty-one million, four hundred eighty-seven thousand, four hundred ninety-three".