2209541855 has 16 divisors (see below), whose sum is σ = 2679730560. Its totient is φ = 1748877312.

The previous prime is 2209541849. The next prime is 2209541869. The reversal of 2209541855 is 5581459022.

It is a cyclic number.

It is not a de Polignac number, because 2209541855 - 2⁶ = 2209541791 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181727 + ... + 193503.

It is an arithmetic number, because the mean of its divisors is an integer number (167483160).

Almost surely, 2^2209541855 is an apocalyptic number.

2209541855 is a deficient number, since it is larger than the sum of its proper divisors (470188705).

2209541855 is a wasteful number, since it uses less digits than its factorization.

2209541855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12178.

The product of its (nonzero) digits is 144000, while the sum is 41.

The square root of 2209541855 is about 47005.7640614425. The cubic root of 2209541855 is about 1302.4690463133.

The spelling of 2209541855 in words is "two billion, two hundred nine million, five hundred forty-one thousand, eight hundred fifty-five".