1320366641 has 8 divisors (see below), whose sum is σ = 1452305568. Its totient is φ = 1200332100.

The previous prime is 1320366631. The next prime is 1320366647. The reversal of 1320366641 is 1466630231.

It is not a de Polignac number, because 1320366641 - 2¹⁸ = 1320104497 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320366598 and 1320366607.

It is not an unprimeable number, because it can be changed into a prime (1320366647) 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, 494675 + ... + 497336.

It is an arithmetic number, because the mean of its divisors is an integer number (181538196).

Almost surely, 2^1320366641 is an apocalyptic number.

1320366641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320366641 is a deficient number, since it is larger than the sum of its proper divisors (131938927).

1320366641 is an frugal number, since it uses more digits than its factorization.

1320366641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992044 (or 992022 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 1320366641 is about 36336.8496295427. The cubic root of 1320366641 is about 1097.0628644664.

Adding to 1320366641 its reverse (1466630231), we get a palindrome (2786996872).

The spelling of 1320366641 in words is "one billion, three hundred twenty million, three hundred sixty-six thousand, six hundred forty-one".