2009540532 has 24 divisors (see below), whose sum is σ = 4694620896. Its totient is φ = 669033568.

The previous prime is 2009540479. The next prime is 2009540537. The reversal of 2009540532 is 2350459002.

It is a self number, because there is not a number n which added to its sum of digits gives 2009540532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009540537) 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 7 ways as a sum of consecutive naturals, for example, 91323 + ... + 111170.

It is an arithmetic number, because the mean of its divisors is an integer number (195609204).

Almost surely, 2^2009540532 is an apocalyptic number.

It is an amenable number.

2009540532 is an abundant number, since it is smaller than the sum of its proper divisors (2685080364).

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

2009540532 is a wasteful number, since it uses less digits than its factorization.

2009540532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203327 (or 203325 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 2009540532 is about 44827.8990362029. The cubic root of 2009540532 is about 1261.9212589310.

Adding to 2009540532 its reverse (2350459002), we get a palindrome (4359999534).

The spelling of 2009540532 in words is "two billion, nine million, five hundred forty thousand, five hundred thirty-two".