8637328493 has 2 divisors, whose sum is σ = 8637328494. Its totient is φ = 8637328492.

The previous prime is 8637328487. The next prime is 8637328571. The reversal of 8637328493 is 3948237368.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8128284649 + 509043844 = 90157^2 + 22562^2 .

It is a cyclic number.

It is not a de Polignac number, because 8637328493 - 2¹⁰ = 8637327469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8637328393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4318664246 + 4318664247.

It is an arithmetic number, because the mean of its divisors is an integer number (4318664247).

Almost surely, 2^8637328493 is an apocalyptic number.

It is an amenable number.

8637328493 is a deficient number, since it is larger than the sum of its proper divisors (1).

8637328493 is an equidigital number, since it uses as much as digits as its factorization.

8637328493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 53.

The square root of 8637328493 is about 92937.2287783534. The cubic root of 8637328493 is about 2051.7596228812.

The spelling of 8637328493 in words is "eight billion, six hundred thirty-seven million, three hundred twenty-eight thousand, four hundred ninety-three".