9221618 has 16 divisors (see below), whose sum is σ = 15956160. Its totient is φ = 3915216.

The previous prime is 9221617. The next prime is 9221647. The reversal of 9221618 is 8161229.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9221617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1496 + ... + 4547.

It is an arithmetic number, because the mean of its divisors is an integer number (997260).

Almost surely, 2^9221618 is an apocalyptic number.

9221618 is a deficient number, since it is larger than the sum of its proper divisors (6734542).

9221618 is a wasteful number, since it uses less digits than its factorization.

9221618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161.

The product of its digits is 1728, while the sum is 29.

The square root of 9221618 is about 3036.7117084109. The cubic root of 9221618 is about 209.7019050970.

The spelling of 9221618 in words is "nine million, two hundred twenty-one thousand, six hundred eighteen".