1669686011 has 8 divisors (see below), whose sum is σ = 1908814080. Its totient is φ = 1430708328.

The previous prime is 1669685921. The next prime is 1669686019. The reversal of 1669686011 is 1106869661.

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

It is not a de Polignac number, because 1669686011 - 2¹⁴ = 1669669627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1669686019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12701 + ... + 59166.

It is an arithmetic number, because the mean of its divisors is an integer number (238601760).

Almost surely, 2^1669686011 is an apocalyptic number.

1669686011 is a deficient number, since it is larger than the sum of its proper divisors (239128069).

1669686011 is an equidigital number, since it uses as much as digits as its factorization.

1669686011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75193.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 1669686011 is about 40861.7915784416. The cubic root of 1669686011 is about 1186.3466352914.

The spelling of 1669686011 in words is "one billion, six hundred sixty-nine million, six hundred eighty-six thousand, eleven".