1668119807 has 8 divisors (see below), whose sum is σ = 1689164400. Its totient is φ = 1647097920.

The previous prime is 1668119779. The next prime is 1668119813. The reversal of 1668119807 is 7089118661.

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 1668119807 - 2²⁴ = 1651342591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1668119857) 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, 179819 + ... + 188867.

It is an arithmetic number, because the mean of its divisors is an integer number (211145550).

Almost surely, 2^1668119807 is an apocalyptic number.

1668119807 is a deficient number, since it is larger than the sum of its proper divisors (21044593).

1668119807 is an equidigital number, since it uses as much as digits as its factorization.

1668119807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11353.

The product of its (nonzero) digits is 145152, while the sum is 47.

The square root of 1668119807 is about 40842.6224304953. The cubic root of 1668119807 is about 1185.9755790760.

The spelling of 1668119807 in words is "one billion, six hundred sixty-eight million, one hundred nineteen thousand, eight hundred seven".