1668365313 has 16 divisors (see below), whose sum is σ = 2272323456. Its totient is φ = 1088554880.

The previous prime is 1668365267. The next prime is 1668365333. The reversal of 1668365313 is 3135638661.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1668365313 - 2¹⁰ = 1668364289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1668365333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595 + ... + 57767.

It is an arithmetic number, because the mean of its divisors is an integer number (142020216).

Almost surely, 2^1668365313 is an apocalyptic number.

It is an amenable number.

1668365313 is a deficient number, since it is larger than the sum of its proper divisors (603958143).

1668365313 is a wasteful number, since it uses less digits than its factorization.

1668365313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57384.

The product of its digits is 233280, while the sum is 42.

The square root of 1668365313 is about 40845.6278321193. The cubic root of 1668365313 is about 1186.0337583180.

The spelling of 1668365313 in words is "one billion, six hundred sixty-eight million, three hundred sixty-five thousand, three hundred thirteen".