1668435275 has 24 divisors (see below), whose sum is σ = 2230221840. Its totient is φ = 1230848640.

The previous prime is 1668435269. The next prime is 1668435317. The reversal of 1668435275 is 5725348661.

It is not a de Polignac number, because 1668435275 - 2⁴ = 1668435259 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 444356 + ... + 448094.

It is an arithmetic number, because the mean of its divisors is an integer number (92925910).

Almost surely, 2^1668435275 is an apocalyptic number.

1668435275 is a deficient number, since it is larger than the sum of its proper divisors (561786565).

1668435275 is a wasteful number, since it uses less digits than its factorization.

1668435275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5135 (or 5130 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 1668435275 is about 40846.4842428329. The cubic root of 1668435275 is about 1186.0503366484.

The spelling of 1668435275 in words is "one billion, six hundred sixty-eight million, four hundred thirty-five thousand, two hundred seventy-five".