1326465689 has 4 divisors (see below), whose sum is σ = 1328703156. Its totient is φ = 1324228224.

The previous prime is 1326465667. The next prime is 1326465697. The reversal of 1326465689 is 9865646231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 763969600 + 562496089 = 27640^2 + 23717^2 .

It is a cyclic number.

It is not a de Polignac number, because 1326465689 - 2⁸ = 1326465433 is a prime.

It is a super-3 number, since 3×1326465689³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326465649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1117844 + ... + 1119029.

It is an arithmetic number, because the mean of its divisors is an integer number (332175789).

Almost surely, 2^1326465689 is an apocalyptic number.

It is an amenable number.

1326465689 is a deficient number, since it is larger than the sum of its proper divisors (2237467).

1326465689 is an equidigital number, since it uses as much as digits as its factorization.

1326465689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237466.

The product of its digits is 1866240, while the sum is 50.

The square root of 1326465689 is about 36420.6766686178. The cubic root of 1326465689 is about 1098.7494573631.

The spelling of 1326465689 in words is "one billion, three hundred twenty-six million, four hundred sixty-five thousand, six hundred eighty-nine".