18904850 has 48 divisors (see below), whose sum is σ = 38890368. Its totient is φ = 6800640.

The previous prime is 18904849. The next prime is 18904859. The reversal of 18904850 is 5840981.

It is a self number, because there is not a number n which added to its sum of digits gives 18904850.

It is not an unprimeable number, because it can be changed into a prime (18904859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19067 + ... + 20033.

It is an arithmetic number, because the mean of its divisors is an integer number (810216).

Almost surely, 2^18904850 is an apocalyptic number.

18904850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18904850 is an abundant number, since it is smaller than the sum of its proper divisors (19985518).

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

18904850 is a wasteful number, since it uses less digits than its factorization.

18904850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 1014 counting only the distinct ones).

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

The square root of 18904850 is about 4347.9707910702. The cubic root of 18904850 is about 266.3939834122.

The spelling of 18904850 in words is "eighteen million, nine hundred four thousand, eight hundred fifty".