8338388491 has 2 divisors, whose sum is σ = 8338388492. Its totient is φ = 8338388490.

The previous prime is 8338388483. The next prime is 8338388501. The reversal of 8338388491 is 1948838338.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8338388491 - 2³ = 8338388483 is a prime.

It is not a weakly prime, because it can be changed into another prime (8338388291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4169194245 + 4169194246.

It is an arithmetic number, because the mean of its divisors is an integer number (4169194246).

Almost surely, 2^8338388491 is an apocalyptic number.

8338388491 is a deficient number, since it is larger than the sum of its proper divisors (1).

8338388491 is an equidigital number, since it uses as much as digits as its factorization.

8338388491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3981312, while the sum is 55.

The square root of 8338388491 is about 91314.7769586062. The cubic root of 8338388491 is about 2027.8105355246.

The spelling of 8338388491 in words is "eight billion, three hundred thirty-eight million, three hundred eighty-eight thousand, four hundred ninety-one".