2009888688 has 80 divisors (see below), whose sum is σ = 5259949056. Its totient is φ = 661267200.

The previous prime is 2009888687. The next prime is 2009888707. The reversal of 2009888688 is 8868889002.

It is a super-2 number, since 2×2009888688² = 8079305076300722688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2009888681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2942395 + ... + 2943077.

Almost surely, 2^2009888688 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 2009888688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2629974528).

2009888688 is an abundant number, since it is smaller than the sum of its proper divisors (3250060368).

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

2009888688 is a wasteful number, since it uses less digits than its factorization.

2009888688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402 (or 1396 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 57.

The square root of 2009888688 is about 44831.7821193849. The cubic root of 2009888688 is about 1261.9941313249.

The spelling of 2009888688 in words is "two billion, nine million, eight hundred eighty-eight thousand, six hundred eighty-eight".