2009549835 has 24 divisors (see below), whose sum is σ = 3503367504. Its totient is φ = 1065560640.

The previous prime is 2009549819. The next prime is 2009549837. The reversal of 2009549835 is 5389459002.

2009549835 is a `hidden beast` number, since 20 + 0 + 9 + 549 + 83 + 5 = 666.

It is not a de Polignac number, because 2009549835 - 2⁴ = 2009549819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2009549837) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 121281 + ... + 136850.

It is an arithmetic number, because the mean of its divisors is an integer number (145973646).

Almost surely, 2^2009549835 is an apocalyptic number.

2009549835 is a deficient number, since it is larger than the sum of its proper divisors (1493817669).

2009549835 is a wasteful number, since it uses less digits than its factorization.

2009549835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258315 (or 258312 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2009549835 is about 44828.0027995895. The cubic root of 2009549835 is about 1261.9232062477.

The spelling of 2009549835 in words is "two billion, nine million, five hundred forty-nine thousand, eight hundred thirty-five".