18944618 has 16 divisors (see below), whose sum is σ = 35429184. Its totient is φ = 7380960.

The previous prime is 18944609. The next prime is 18944621. The reversal of 18944618 is 81644981.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61355 + ... + 61662.

It is an arithmetic number, because the mean of its divisors is an integer number (2214324).

Almost surely, 2^18944618 is an apocalyptic number.

18944618 is a deficient number, since it is larger than the sum of its proper divisors (16484566).

18944618 is a wasteful number, since it uses less digits than its factorization.

18944618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123037.

The product of its digits is 55296, while the sum is 41.

The square root of 18944618 is about 4352.5415563783. The cubic root of 18944618 is about 266.5806469080.

The spelling of 18944618 in words is "eighteen million, nine hundred forty-four thousand, six hundred eighteen".