2205612618 has 32 divisors (see below), whose sum is σ = 4870236672. Its totient is φ = 660313200.

The previous prime is 2205612601. The next prime is 2205612641. The reversal of 2205612618 is 8162165022.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 195838 + ... + 206793.

It is an arithmetic number, because the mean of its divisors is an integer number (152194896).

Almost surely, 2^2205612618 is an apocalyptic number.

2205612618 is an abundant number, since it is smaller than the sum of its proper divisors (2664624054).

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

2205612618 is a wasteful number, since it uses less digits than its factorization.

2205612618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402730.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 2205612618 is about 46963.9501958683. The cubic root of 2205612618 is about 1301.6965262587.

The spelling of 2205612618 in words is "two billion, two hundred five million, six hundred twelve thousand, six hundred eighteen".