1668302307 has 12 divisors (see below), whose sum is σ = 2754022960. Its totient is φ = 953315568.

The previous prime is 1668302303. The next prime is 1668302351. The reversal of 1668302307 is 7032038661.

It is a happy number.

It is not a de Polignac number, because 1668302307 - 2² = 1668302303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1668302303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13240432 + ... + 13240557.

Almost surely, 2^1668302307 is an apocalyptic number.

1668302307 is a deficient number, since it is larger than the sum of its proper divisors (1085720653).

1668302307 is a wasteful number, since it uses less digits than its factorization.

1668302307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26481002 (or 26480999 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 1668302307 is about 40844.8565550180. The cubic root of 1668302307 is about 1186.0188278982.

The spelling of 1668302307 in words is "one billion, six hundred sixty-eight million, three hundred two thousand, three hundred seven".