1326906305 has 8 divisors (see below), whose sum is σ = 1600371432. Its totient is φ = 1056135808.

The previous prime is 1326906289. The next prime is 1326906307. The reversal of 1326906305 is 5036096231.

1326906305 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 886074289 + 440832016 = 29767^2 + 20996^2 .

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 1326906305 - 2⁴ = 1326906289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1326906307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 672572 + ... + 674541.

It is an arithmetic number, because the mean of its divisors is an integer number (200046429).

Almost surely, 2^1326906305 is an apocalyptic number.

It is an amenable number.

1326906305 is a deficient number, since it is larger than the sum of its proper divisors (273465127).

1326906305 is a wasteful number, since it uses less digits than its factorization.

1326906305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347315.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 1326906305 is about 36426.7251478911. The cubic root of 1326906305 is about 1098.8711021721.

The spelling of 1326906305 in words is "one billion, three hundred twenty-six million, nine hundred six thousand, three hundred five".