4001666486 has 16 divisors (see below), whose sum is σ = 6028501248. Its totient is φ = 1992177600.

The previous prime is 4001666447. The next prime is 4001666491. The reversal of 4001666486 is 6846661004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184696 + ... + 1188068.

It is an arithmetic number, because the mean of its divisors is an integer number (376781328).

Almost surely, 2^4001666486 is an apocalyptic number.

4001666486 is a deficient number, since it is larger than the sum of its proper divisors (2026834762).

4001666486 is a wasteful number, since it uses less digits than its factorization.

4001666486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5767.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 4001666486 is about 63258.7265600565. The cubic root of 4001666486 is about 1587.6214698299.

The spelling of 4001666486 in words is "four billion, one million, six hundred sixty-six thousand, four hundred eighty-six".