2089218618 has 24 divisors (see below), whose sum is σ = 4531801248. Its totient is φ = 695612232.

The previous prime is 2089218617. The next prime is 2089218623. The reversal of 2089218618 is 8168129802.

It is a happy number.

2089218618 is a `hidden beast` number, since 2 + 0 + 8 + 9 + 21 + 8 + 618 = 666.

It is not an unprimeable number, because it can be changed into a prime (2089218613) 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 11 ways as a sum of consecutive naturals, for example, 49830 + ... + 81617.

It is an arithmetic number, because the mean of its divisors is an integer number (188825052).

Almost surely, 2^2089218618 is an apocalyptic number.

2089218618 is an abundant number, since it is smaller than the sum of its proper divisors (2442582630).

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

2089218618 is a wasteful number, since it uses less digits than its factorization.

2089218618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132338 (or 132335 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 2089218618 is about 45707.9710553860. The cubic root of 2089218618 is about 1278.3839097309.

The spelling of 2089218618 in words is "two billion, eighty-nine million, two hundred eighteen thousand, six hundred eighteen".