1326320069 has 4 divisors (see below), whose sum is σ = 1335862080. Its totient is φ = 1316778060.

The previous prime is 1326320057. The next prime is 1326320077. The reversal of 1326320069 is 9600236231.

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: 9600236231 = 103 ⋅93206177.

It is a cyclic number.

It is not a de Polignac number, because 1326320069 - 2⁴ = 1326320053 is a prime.

It is a super-2 number, since 2×1326320069² = 3518249850864329522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326322069) 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, 4770797 + ... + 4771074.

It is an arithmetic number, because the mean of its divisors is an integer number (333965520).

Almost surely, 2^1326320069 is an apocalyptic number.

It is an amenable number.

1326320069 is a deficient number, since it is larger than the sum of its proper divisors (9542011).

1326320069 is an equidigital number, since it uses as much as digits as its factorization.

1326320069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9542010.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1326320069 is about 36418.6774746146. The cubic root of 1326320069 is about 1098.7092488218.

The spelling of 1326320069 in words is "one billion, three hundred twenty-six million, three hundred twenty thousand, sixty-nine".