4326538991 has 2 divisors, whose sum is σ = 4326538992. Its totient is φ = 4326538990.

The previous prime is 4326538967. The next prime is 4326539017. The reversal of 4326538991 is 1998356234.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4326538991 - 2⁶ = 4326538927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4326538921) 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, 2163269495 + 2163269496.

It is an arithmetic number, because the mean of its divisors is an integer number (2163269496).

Almost surely, 2^4326538991 is an apocalyptic number.

4326538991 is a deficient number, since it is larger than the sum of its proper divisors (1).

4326538991 is an equidigital number, since it uses as much as digits as its factorization.

4326538991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1399680, while the sum is 50.

The square root of 4326538991 is about 65776.4318810317. The cubic root of 4326538991 is about 1629.4718942310.

The spelling of 4326538991 in words is "four billion, three hundred twenty-six million, five hundred thirty-eight thousand, nine hundred ninety-one".