1326817601 has 2 divisors, whose sum is σ = 1326817602. Its totient is φ = 1326817600.

The previous prime is 1326817579. The next prime is 1326817603. The reversal of 1326817601 is 1067186231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973377601 + 353440000 = 31199^2 + 18800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326817601 - 2¹⁸ = 1326555457 is a prime.

Together with 1326817603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1326817603) 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, 663408800 + 663408801.

It is an arithmetic number, because the mean of its divisors is an integer number (663408801).

Almost surely, 2^1326817601 is an apocalyptic number.

It is an amenable number.

1326817601 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326817601 is an equidigital number, since it uses as much as digits as its factorization.

1326817601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1326817601 is about 36425.5075599503. The cubic root of 1326817601 is about 1098.8466150288.

The spelling of 1326817601 in words is "one billion, three hundred twenty-six million, eight hundred seventeen thousand, six hundred one".