2009192920 has 64 divisors (see below), whose sum is σ = 5170636800. Its totient is φ = 688314240.

The previous prime is 2009192917. The next prime is 2009192921. The reversal of 2009192920 is 292919002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009192921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510721 + ... + 514639.

It is an arithmetic number, because the mean of its divisors is an integer number (80791200).

Almost surely, 2^2009192920 is an apocalyptic number.

2009192920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009192920 is an abundant number, since it is smaller than the sum of its proper divisors (3161443880).

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

2009192920 is a wasteful number, since it uses less digits than its factorization.

2009192920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5768 (or 5764 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 2009192920 is about 44824.0216848065. The cubic root of 2009192920 is about 1261.8484920039.

The spelling of 2009192920 in words is "two billion, nine million, one hundred ninety-two thousand, nine hundred twenty".