1669985104 has 80 divisors (see below), whose sum is σ = 3486276864. Its totient is φ = 772992000.

The previous prime is 1669985027. The next prime is 1669985111. The reversal of 1669985104 is 4015899661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2277922 + ... + 2278654.

Almost surely, 2^1669985104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1669985104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1743138432).

1669985104 is an abundant number, since it is smaller than the sum of its proper divisors (1816291760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1669985104 is a wasteful number, since it uses less digits than its factorization.

1669985104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956 (or 950 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 1669985104 is about 40865.4512271674. The cubic root of 1669985104 is about 1186.4174683277.

The spelling of 1669985104 in words is "one billion, six hundred sixty-nine million, nine hundred eighty-five thousand, one hundred four".