1326856965 has 32 divisors (see below), whose sum is σ = 2485437696. Its totient is φ = 591767040.

The previous prime is 1326856943. The next prime is 1326856967. The reversal of 1326856965 is 5696586231.

It is not a de Polignac number, because 1326856965 - 2¹¹ = 1326854917 is a prime.

It is a super-2 number, since 2×1326856965² = 3521098811138022450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1326856967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 149802 + ... + 158411.

It is an arithmetic number, because the mean of its divisors is an integer number (77669928).

Almost surely, 2^1326856965 is an apocalyptic number.

1326856965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1326856965 is a deficient number, since it is larger than the sum of its proper divisors (1158580731).

1326856965 is a wasteful number, since it uses less digits than its factorization.

1326856965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308269.

The product of its digits is 2332800, while the sum is 51.

The square root of 1326856965 is about 36426.0478915844. The cubic root of 1326856965 is about 1098.8574817750.

The spelling of 1326856965 in words is "one billion, three hundred twenty-six million, eight hundred fifty-six thousand, nine hundred sixty-five".