18803900 has 36 divisors (see below), whose sum is σ = 41762952. Its totient is φ = 7344960.

The previous prime is 18803893. The next prime is 18803927. The reversal of 18803900 is 930881.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2114 + ... + 6486.

It is an arithmetic number, because the mean of its divisors is an integer number (1160082).

Almost surely, 2^18803900 is an apocalyptic number.

18803900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18803900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20881476).

18803900 is an abundant number, since it is smaller than the sum of its proper divisors (22959052).

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

18803900 is a wasteful number, since it uses less digits than its factorization.

18803900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4430 (or 4423 counting only the distinct ones).

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

The square root of 18803900 is about 4336.3463883781. The cubic root of 18803900 is about 265.9189645178.

The spelling of 18803900 in words is "eighteen million, eight hundred three thousand, nine hundred".