1668502007 has 2 divisors, whose sum is σ = 1668502008. Its totient is φ = 1668502006.

The previous prime is 1668502001. The next prime is 1668502027. The reversal of 1668502007 is 7002058661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1668502007 - 2¹⁸ = 1668239863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1668502001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 834251003 + 834251004.

It is an arithmetic number, because the mean of its divisors is an integer number (834251004).

Almost surely, 2^1668502007 is an apocalyptic number.

1668502007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1668502007 is an equidigital number, since it uses as much as digits as its factorization.

1668502007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1668502007 is about 40847.3010981142. The cubic root of 1668502007 is about 1186.0661491598.

The spelling of 1668502007 in words is "one billion, six hundred sixty-eight million, five hundred two thousand, seven".