1326165305 has 8 divisors (see below), whose sum is σ = 1591743744. Its totient is φ = 1060702000.

The previous prime is 1326165283. The next prime is 1326165307. The reversal of 1326165305 is 5035616231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1326165305 - 2⁶ = 1326165241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326165307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001 + ... + 51510.

It is an arithmetic number, because the mean of its divisors is an integer number (198967968).

Almost surely, 2^1326165305 is an apocalyptic number.

It is an amenable number.

1326165305 is a deficient number, since it is larger than the sum of its proper divisors (265578439).

1326165305 is an equidigital number, since it uses as much as digits as its factorization.

1326165305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57567.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 1326165305 is about 36416.5526237726. The cubic root of 1326165305 is about 1098.6665122163. Note that the first 3 decimals are identical.

The spelling of 1326165305 in words is "one billion, three hundred twenty-six million, one hundred sixty-five thousand, three hundred five".