1669886105 has 8 divisors (see below), whose sum is σ = 2041672392. Its totient is φ = 1310702848.

The previous prime is 1669886087. The next prime is 1669886107. The reversal of 1669886105 is 5016889661.

It can be written as a sum of positive squares in 4 ways, for example, as 321233929 + 1348652176 = 17923^2 + 36724^2 .

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 1669886105 - 2¹⁰ = 1669885081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1669886107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3150464 + ... + 3150993.

It is an arithmetic number, because the mean of its divisors is an integer number (255209049).

Almost surely, 2^1669886105 is an apocalyptic number.

It is an amenable number.

1669886105 is a deficient number, since it is larger than the sum of its proper divisors (371786287).

1669886105 is an equidigital number, since it uses as much as digits as its factorization.

1669886105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6301515.

The product of its (nonzero) digits is 622080, while the sum is 50.

The square root of 1669886105 is about 40864.2399293074. The cubic root of 1669886105 is about 1186.3940237146.

The spelling of 1669886105 in words is "one billion, six hundred sixty-nine million, eight hundred eighty-six thousand, one hundred five".