18044630 has 8 divisors (see below), whose sum is σ = 32480352. Its totient is φ = 7217848.

The previous prime is 18044629. The next prime is 18044647. The reversal of 18044630 is 3644081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18044630.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 902222 + ... + 902241.

It is an arithmetic number, because the mean of its divisors is an integer number (4060044).

Almost surely, 2^18044630 is an apocalyptic number.

18044630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18044630 is a deficient number, since it is larger than the sum of its proper divisors (14435722).

18044630 is a wasteful number, since it uses less digits than its factorization.

18044630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804470.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 18044630 is about 4247.8971268146. The cubic root of 18044630 is about 262.2905600747.

The spelling of 18044630 in words is "eighteen million, forty-four thousand, six hundred thirty".