1327691941 has 8 divisors (see below), whose sum is σ = 1336164984. Its totient is φ = 1319236800.

The previous prime is 1327691929. The next prime is 1327691957. The reversal of 1327691941 is 1491967231.

It can be written as a sum of positive squares in 4 ways, for example, as 349316100 + 978375841 = 18690^2 + 31279^2 .

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-1327691941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1327691921) 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, 164091 + ... + 171991.

It is an arithmetic number, because the mean of its divisors is an integer number (167020623).

Almost surely, 2^1327691941 is an apocalyptic number.

It is an amenable number.

1327691941 is a deficient number, since it is larger than the sum of its proper divisors (8473043).

1327691941 is an equidigital number, since it uses as much as digits as its factorization.

1327691941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8951.

The product of its digits is 81648, while the sum is 43.

The square root of 1327691941 is about 36437.5073379066. The cubic root of 1327691941 is about 1099.0879329476.

The spelling of 1327691941 in words is "one billion, three hundred twenty-seven million, six hundred ninety-one thousand, nine hundred forty-one".