1689808008 has 32 divisors (see below), whose sum is σ = 4828023360. Its totient is φ = 482802240.

The previous prime is 1689807991. The next prime is 1689808013. The reversal of 1689808008 is 8008089861.

It is a super-2 number, since 2×1689808008² = 5710902207801856128, which contains 22 as substring.

It is an unprimeable number.

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, 5029023 + ... + 5029358.

It is an arithmetic number, because the mean of its divisors is an integer number (150875730).

Almost surely, 2^1689808008 is an apocalyptic number.

It is an amenable number.

1689808008 is an abundant number, since it is smaller than the sum of its proper divisors (3138215352).

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

1689808008 is a wasteful number, since it uses less digits than its factorization.

1689808008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058397 (or 10058393 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 48.

The square root of 1689808008 is about 41107.2743927398. The cubic root of 1689808008 is about 1191.0933171670.

The spelling of 1689808008 in words is "one billion, six hundred eighty-nine million, eight hundred eight thousand, eight".