18845900 has 18 divisors (see below), whose sum is σ = 40895820. Its totient is φ = 7538320.

The previous prime is 18845851. The next prime is 18845909. The reversal of 18845900 is 954881.

It is not an unprimeable number, because it can be changed into a prime (18845909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 94130 + ... + 94329.

It is an arithmetic number, because the mean of its divisors is an integer number (2271990).

Almost surely, 2^18845900 is an apocalyptic number.

18845900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18845900 is an abundant number, since it is smaller than the sum of its proper divisors (22049920).

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

18845900 is a wasteful number, since it uses less digits than its factorization.

18845900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188473 (or 188466 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 18845900 is about 4341.1864737650. The cubic root of 18845900 is about 266.1168009861.

The spelling of 18845900 in words is "eighteen million, eight hundred forty-five thousand, nine hundred".