1326917797 has 2 divisors, whose sum is σ = 1326917798. Its totient is φ = 1326917796.

The previous prime is 1326917789. The next prime is 1326917833. The reversal of 1326917797 is 7977196231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1276918756 + 49999041 = 35734^2 + 7071^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326917797 - 2³ = 1326917789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326917737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663458898 + 663458899.

It is an arithmetic number, because the mean of its divisors is an integer number (663458899).

Almost surely, 2^1326917797 is an apocalyptic number.

It is an amenable number.

1326917797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326917797 is an equidigital number, since it uses as much as digits as its factorization.

1326917797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1000188, while the sum is 52.

The square root of 1326917797 is about 36426.8828888775. The cubic root of 1326917797 is about 1098.8742745112.

The spelling of 1326917797 in words is "one billion, three hundred twenty-six million, nine hundred seventeen thousand, seven hundred ninety-seven".