1668056371 has 8 divisors (see below), whose sum is σ = 1766669184. Its totient is φ = 1569498240.

The previous prime is 1668056363. The next prime is 1668056389. The reversal of 1668056371 is 1736508661.

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

It is a cyclic number.

It is not a de Polignac number, because 1668056371 - 2³ = 1668056363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1668054371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60766 + ... + 83836.

It is an arithmetic number, because the mean of its divisors is an integer number (220833648).

Almost surely, 2^1668056371 is an apocalyptic number.

1668056371 is a deficient number, since it is larger than the sum of its proper divisors (98612813).

1668056371 is a wasteful number, since it uses less digits than its factorization.

1668056371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27341.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1668056371 is about 40841.8458324302. The cubic root of 1668056371 is about 1185.9605452837.

The spelling of 1668056371 in words is "one billion, six hundred sixty-eight million, fifty-six thousand, three hundred seventy-one".