1666110983 has 4 divisors (see below), whose sum is σ = 1674483600. Its totient is φ = 1657738368.

The previous prime is 1666110967. The next prime is 1666110991. The reversal of 1666110983 is 3890116661.

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

It is a cyclic number.

It is not a de Polignac number, because 1666110983 - 2⁴ = 1666110967 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1666110983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666110583) 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, 4186010 + ... + 4186407.

It is an arithmetic number, because the mean of its divisors is an integer number (418620900).

Almost surely, 2^1666110983 is an apocalyptic number.

1666110983 is a deficient number, since it is larger than the sum of its proper divisors (8372617).

1666110983 is an equidigital number, since it uses as much as digits as its factorization.

1666110983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372616.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 1666110983 is about 40818.0227718100. The cubic root of 1666110983 is about 1185.4993196822.

The spelling of 1666110983 in words is "one billion, six hundred sixty-six million, one hundred ten thousand, nine hundred eighty-three".