2009190888 has 48 divisors (see below), whose sum is σ = 5456786400. Its totient is φ = 667856160.

The previous prime is 2009190863. The next prime is 2009190893. The reversal of 2009190888 is 8880919002.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 13018 + ... + 64713.

It is an arithmetic number, because the mean of its divisors is an integer number (113683050).

Almost surely, 2^2009190888 is an apocalyptic number.

It is an amenable number.

2009190888 is an abundant number, since it is smaller than the sum of its proper divisors (3447595512).

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

2009190888 is a wasteful number, since it uses less digits than its factorization.

2009190888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78102 (or 78095 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The square root of 2009190888 is about 44823.9990183830. Note that the first 3 decimals coincide. The cubic root of 2009190888 is about 1261.8480666130.

The spelling of 2009190888 in words is "two billion, nine million, one hundred ninety thousand, eight hundred eighty-eight".