2205478509 has 32 divisors (see below), whose sum is σ = 3202093440. Its totient is φ = 1342199808.

The previous prime is 2205478411. The next prime is 2205478529. The reversal of 2205478509 is 9058745022.

It is not a de Polignac number, because 2205478509 - 2¹³ = 2205470317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2205478529) 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, 1480437 + ... + 1481925.

It is an arithmetic number, because the mean of its divisors is an integer number (100065420).

Almost surely, 2^2205478509 is an apocalyptic number.

It is an amenable number.

2205478509 is a deficient number, since it is larger than the sum of its proper divisors (996614931).

2205478509 is a wasteful number, since it uses less digits than its factorization.

2205478509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1901.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 2205478509 is about 46962.5223875379. The cubic root of 2205478509 is about 1301.6701431492.

The spelling of 2205478509 in words is "two billion, two hundred five million, four hundred seventy-eight thousand, five hundred nine".