1326000001 has 4 divisors (see below), whose sum is σ = 1328701104. Its totient is φ = 1323298900.

The previous prime is 1325999999. The next prime is 1326000041. The reversal of 1326000001 is 1000006231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000006231 = 7 ⋅142858033.

It is a cyclic number.

It is not a de Polignac number, because 1326000001 - 2¹ = 1325999999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326000041) 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 in 3 ways as a sum of consecutive naturals, for example, 1349815 + ... + 1350796.

It is an arithmetic number, because the mean of its divisors is an integer number (332175276).

Almost surely, 2^1326000001 is an apocalyptic number.

It is an amenable number.

1326000001 is a deficient number, since it is larger than the sum of its proper divisors (2701103).

1326000001 is an equidigital number, since it uses as much as digits as its factorization.

1326000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2701102.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1326000001 is about 36414.2829257971. The cubic root of 1326000001 is about 1098.6208614178.

Adding to 1326000001 its reverse (1000006231), we get a palindrome (2326006232).

The spelling of 1326000001 in words is "one billion, three hundred twenty-six million, one", and thus it is an aban number.