1327656961 has 4 divisors (see below), whose sum is σ = 1343652912. Its totient is φ = 1311661012.

The previous prime is 1327656959. The next prime is 1327657013. The reversal of 1327656961 is 1696567231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1327656961 - 2¹ = 1327656959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1327656461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7997851 + ... + 7998016.

It is an arithmetic number, because the mean of its divisors is an integer number (335913228).

Almost surely, 2^1327656961 is an apocalyptic number.

It is an amenable number.

1327656961 is a deficient number, since it is larger than the sum of its proper divisors (15995951).

1327656961 is an equidigital number, since it uses as much as digits as its factorization.

1327656961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15995950.

The product of its digits is 408240, while the sum is 46.

The square root of 1327656961 is about 36437.0273348417. The cubic root of 1327656961 is about 1099.0782804993.

The spelling of 1327656961 in words is "one billion, three hundred twenty-seven million, six hundred fifty-six thousand, nine hundred sixty-one".