1326120809 has 8 divisors (see below), whose sum is σ = 1442271432. Its totient is φ = 1211990400.

The previous prime is 1326120799. The next prime is 1326120823. The reversal of 1326120809 is 9080216231.

It can be written as a sum of positive squares in 4 ways, for example, as 134490409 + 1191630400 = 11597^2 + 34520^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1326120809 - 2⁸ = 1326120553 is a prime.

It is a super-3 number, since 3×1326120809³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326120869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 503684 + ... + 506309.

It is an arithmetic number, because the mean of its divisors is an integer number (180283929).

Almost surely, 2^1326120809 is an apocalyptic number.

It is an amenable number.

1326120809 is a deficient number, since it is larger than the sum of its proper divisors (116150623).

1326120809 is a wasteful number, since it uses less digits than its factorization.

1326120809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010107.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1326120809 is about 36415.9416876730. The cubic root of 1326120809 is about 1098.6542244541.

The spelling of 1326120809 in words is "one billion, three hundred twenty-six million, one hundred twenty thousand, eight hundred nine".