2009805522 has 64 divisors (see below), whose sum is σ = 4282122240. Its totient is φ = 627091200.

The previous prime is 2009805521. The next prime is 2009805557. The reversal of 2009805522 is 2255089002.

It is not an unprimeable number, because it can be changed into a prime (2009805521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5247343 + ... + 5247725.

It is an arithmetic number, because the mean of its divisors is an integer number (66908160).

Almost surely, 2^2009805522 is an apocalyptic number.

2009805522 is an abundant number, since it is smaller than the sum of its proper divisors (2272316718).

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

2009805522 is a wasteful number, since it uses less digits than its factorization.

2009805522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 2009805522 is about 44830.8545758387. The cubic root of 2009805522 is about 1261.9767246476.

The spelling of 2009805522 in words is "two billion, nine million, eight hundred five thousand, five hundred twenty-two".