1668417611 has 12 divisors (see below), whose sum is σ = 1964200392. Its totient is φ = 1412839008.

The previous prime is 1668417601. The next prime is 1668417617. The reversal of 1668417611 is 1167148661.

It is not a de Polignac number, because 1668417611 - 2¹⁴ = 1668401227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1668417617) 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 11 ways as a sum of consecutive naturals, for example, 201050 + ... + 209183.

It is an arithmetic number, because the mean of its divisors is an integer number (163683366).

Almost surely, 2^1668417611 is an apocalyptic number.

1668417611 is a deficient number, since it is larger than the sum of its proper divisors (295782781).

1668417611 is an equidigital number, since it uses as much as digits as its factorization.

1668417611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410330 (or 410323 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 1668417611 is about 40846.2680180209. The cubic root of 1668417611 is about 1186.0461509966.

The spelling of 1668417611 in words is "one billion, six hundred sixty-eight million, four hundred seventeen thousand, six hundred eleven".