1320661841 has 8 divisors (see below), whose sum is σ = 1361966400. Its totient is φ = 1279988080.

The previous prime is 1320661829. The next prime is 1320661843. The reversal of 1320661841 is 1481660231.

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 1320661841 - 2²⁶ = 1253552977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320661798 and 1320661807.

It is not an unprimeable number, because it can be changed into a prime (1320661843) 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, 153446 + ... + 161823.

It is an arithmetic number, because the mean of its divisors is an integer number (170245800).

Almost surely, 2^1320661841 is an apocalyptic number.

It is an amenable number.

1320661841 is a deficient number, since it is larger than the sum of its proper divisors (41304559).

1320661841 is an equidigital number, since it uses as much as digits as its factorization.

1320661841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315399.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 1320661841 is about 36340.9113947353. The cubic root of 1320661841 is about 1097.1446167150.

The spelling of 1320661841 in words is "one billion, three hundred twenty million, six hundred sixty-one thousand, eight hundred forty-one".