18803418 has 16 divisors (see below), whose sum is σ = 38244960. Its totient is φ = 6161456.

The previous prime is 18803417. The next prime is 18803423. The reversal of 18803418 is 81430881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18803417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26205 + ... + 26912.

It is an arithmetic number, because the mean of its divisors is an integer number (2390310).

Almost surely, 2^18803418 is an apocalyptic number.

18803418 is an abundant number, since it is smaller than the sum of its proper divisors (19441542).

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

18803418 is a wasteful number, since it uses less digits than its factorization.

18803418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53181.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 18803418 is about 4336.2908112810. The cubic root of 18803418 is about 265.9166923999.

The spelling of 18803418 in words is "eighteen million, eight hundred three thousand, four hundred eighteen".