1689813708 has 48 divisors (see below), whose sum is σ = 4314221184. Its totient is φ = 510531840.

The previous prime is 1689813707. The next prime is 1689813721. The reversal of 1689813708 is 8073189861.

It is not an unprimeable number, because it can be changed into a prime (1689813707) 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 15 ways as a sum of consecutive naturals, for example, 25491 + ... + 63477.

It is an arithmetic number, because the mean of its divisors is an integer number (89879608).

Almost surely, 2^1689813708 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 1689813708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2157110592).

1689813708 is an abundant number, since it is smaller than the sum of its proper divisors (2624407476).

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

1689813708 is a wasteful number, since it uses less digits than its factorization.

1689813708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38342 (or 38340 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 1689813708 is about 41107.3437234760. The cubic root of 1689813708 is about 1191.0946564167.

The spelling of 1689813708 in words is "one billion, six hundred eighty-nine million, eight hundred thirteen thousand, seven hundred eight".