1326360641 has 4 divisors (see below), whose sum is σ = 1326491952. Its totient is φ = 1326229332.

The previous prime is 1326360631. The next prime is 1326360643. The reversal of 1326360641 is 1460636231.

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: 1460636231 = 5857 ⋅249383.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326360641 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1326360598 and 1326360607.

It is not an unprimeable number, because it can be changed into a prime (1326360643) 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, 49115 + ... + 71168.

It is an arithmetic number, because the mean of its divisors is an integer number (331622988).

Almost surely, 2^1326360641 is an apocalyptic number.

It is an amenable number.

1326360641 is a deficient number, since it is larger than the sum of its proper divisors (131311).

1326360641 is a wasteful number, since it uses less digits than its factorization.

1326360641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131310.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1326360641 is about 36419.2344922295. The cubic root of 1326360641 is about 1098.7204518434.

Adding to 1326360641 its reverse (1460636231), we get a palindrome (2786996872).

The spelling of 1326360641 in words is "one billion, three hundred twenty-six million, three hundred sixty thousand, six hundred forty-one".