2009235500 has 24 divisors (see below), whose sum is σ = 4388171424. Its totient is φ = 803694000.

The previous prime is 2009235497. The next prime is 2009235517. The reversal of 2009235500 is 55329002.

It is a self number, because there is not a number n which added to its sum of digits gives 2009235500.

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, 2008736 + ... + 2009735.

It is an arithmetic number, because the mean of its divisors is an integer number (182840476).

Almost surely, 2^2009235500 is an apocalyptic number.

2009235500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009235500 is an abundant number, since it is smaller than the sum of its proper divisors (2378935924).

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

2009235500 is a wasteful number, since it uses less digits than its factorization.

2009235500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4018490 (or 4018478 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 2009235500 is about 44824.4966508270. The cubic root of 2009235500 is about 1261.8574058864.

The spelling of 2009235500 in words is "two billion, nine million, two hundred thirty-five thousand, five hundred".