1326997099 has 2 divisors, whose sum is σ = 1326997100. Its totient is φ = 1326997098.

The previous prime is 1326997057. The next prime is 1326997123. The reversal of 1326997099 is 9907996231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1326997099 - 2¹⁷ = 1326866027 is a prime.

It is not a weakly prime, because it can be changed into another prime (1326997799) 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 as a sum of consecutive naturals, namely, 663498549 + 663498550.

It is an arithmetic number, because the mean of its divisors is an integer number (663498550).

Almost surely, 2^1326997099 is an apocalyptic number.

1326997099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326997099 is an equidigital number, since it uses as much as digits as its factorization.

1326997099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1653372, while the sum is 55.

The square root of 1326997099 is about 36427.9713818928. The cubic root of 1326997099 is about 1098.8961651392.

The spelling of 1326997099 in words is "one billion, three hundred twenty-six million, nine hundred ninety-seven thousand, ninety-nine".