1668319046 has 8 divisors (see below), whose sum is σ = 2544893640. Its totient is φ = 820021168.

The previous prime is 1668319039. The next prime is 1668319049. The reversal of 1668319046 is 6409138661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1668318988 and 1668319006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668319049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7069031 + ... + 7069266.

It is an arithmetic number, because the mean of its divisors is an integer number (318111705).

Almost surely, 2^1668319046 is an apocalyptic number.

1668319046 is a deficient number, since it is larger than the sum of its proper divisors (876574594).

1668319046 is a wasteful number, since it uses less digits than its factorization.

1668319046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14138358.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1668319046 is about 40845.0614640252. The cubic root of 1668319046 is about 1186.0227945459.

The spelling of 1668319046 in words is "one billion, six hundred sixty-eight million, three hundred nineteen thousand, forty-six".