8263188491 has 2 divisors, whose sum is σ = 8263188492. Its totient is φ = 8263188490.

The previous prime is 8263188463. The next prime is 8263188529. The reversal of 8263188491 is 1948813628.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8263188491 - 2¹⁴ = 8263172107 is a prime.

It is not a weakly prime, because it can be changed into another prime (8263188431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4131594245 + 4131594246.

It is an arithmetic number, because the mean of its divisors is an integer number (4131594246).

Almost surely, 2^8263188491 is an apocalyptic number.

8263188491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8263188491 is an equidigital number, since it uses as much as digits as its factorization.

8263188491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 663552, while the sum is 50.

The square root of 8263188491 is about 90902.0818848501. The cubic root of 8263188491 is about 2021.6961614646.

The spelling of 8263188491 in words is "eight billion, two hundred sixty-three million, one hundred eighty-eight thousand, four hundred ninety-one".