1326351685 has 8 divisors (see below), whose sum is σ = 1646505720. Its totient is φ = 1024492224.

The previous prime is 1326351671. The next prime is 1326351737. The reversal of 1326351685 is 5861536231.

It can be written as a sum of positive squares in 4 ways, for example, as 288932004 + 1037419681 = 16998^2 + 32209^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1326351685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4573482 + ... + 4573771.

It is an arithmetic number, because the mean of its divisors is an integer number (205813215).

Almost surely, 2^1326351685 is an apocalyptic number.

It is an amenable number.

1326351685 is a deficient number, since it is larger than the sum of its proper divisors (320154035).

1326351685 is an equidigital number, since it uses as much as digits as its factorization.

1326351685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9147287.

The product of its digits is 129600, while the sum is 40.

The square root of 1326351685 is about 36419.1115350169. Note that the first 3 decimals coincide. The cubic root of 1326351685 is about 1098.7179788703.

The spelling of 1326351685 in words is "one billion, three hundred twenty-six million, three hundred fifty-one thousand, six hundred eighty-five".