18725850 has 192 divisors, whose sum is σ = 61246080. Its totient is φ = 4147200.

The previous prime is 18725821. The next prime is 18725893. The reversal of 18725850 is 5852781.

18725850 is a `hidden beast` number, since 1 + 8 + 72 + 585 + 0 = 666.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 193002 + ... + 193098.

It is an arithmetic number, because the mean of its divisors is an integer number (318990).

Almost surely, 2^18725850 is an apocalyptic number.

18725850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18725850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30623040).

18725850 is an abundant number, since it is smaller than the sum of its proper divisors (42520230).

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

18725850 is a wasteful number, since it uses less digits than its factorization.

18725850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The square root of 18725850 is about 4327.3375186135. The cubic root of 18725850 is about 265.5505346050.

The spelling of 18725850 in words is "eighteen million, seven hundred twenty-five thousand, eight hundred fifty".