1668105185 has 8 divisors (see below), whose sum is σ = 2012207616. Its totient is φ = 1327496560.

The previous prime is 1668105157. The next prime is 1668105191. The reversal of 1668105185 is 5815018661.

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

It is not a de Polignac number, because 1668105185 - 2¹⁰ = 1668104161 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872399 + ... + 874308.

It is an arithmetic number, because the mean of its divisors is an integer number (251525952).

Almost surely, 2^1668105185 is an apocalyptic number.

It is an amenable number.

1668105185 is a deficient number, since it is larger than the sum of its proper divisors (344102431).

1668105185 is a wasteful number, since it uses less digits than its factorization.

1668105185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746903.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 1668105185 is about 40842.4434259264. The cubic root of 1668105185 is about 1185.9721138202.

The spelling of 1668105185 in words is "one billion, six hundred sixty-eight million, one hundred five thousand, one hundred eighty-five".