1668441286 has 4 divisors (see below), whose sum is σ = 2502661932. Its totient is φ = 834220642.

The previous prime is 1668441241. The next prime is 1668441301. The reversal of 1668441286 is 6821448661.

It is a semiprime because it is the product of two primes.

It is a super-3 number, since 3×1668441286³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417110320 + ... + 417110323.

It is an arithmetic number, because the mean of its divisors is an integer number (625665483).

Almost surely, 2^1668441286 is an apocalyptic number.

1668441286 is a deficient number, since it is larger than the sum of its proper divisors (834220646).

1668441286 is an equidigital number, since it uses as much as digits as its factorization.

1668441286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834220645.

The product of its digits is 442368, while the sum is 46.

The square root of 1668441286 is about 40846.5578231508. The cubic root of 1668441286 is about 1186.0517610049.

It can be divided in two parts, 16684 and 41286, that added together give a triangular number (57970 = T₃₄₀).

The spelling of 1668441286 in words is "one billion, six hundred sixty-eight million, four hundred forty-one thousand, two hundred eighty-six".