18530850 has 144 divisors (see below), whose sum is σ = 53916192. Its totient is φ = 4193280.

The previous prime is 18530849. The next prime is 18530851. The reversal of 18530850 is 5803581.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18530849) and next prime (18530851).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (18530851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 430929 + ... + 430971.

It is an arithmetic number, because the mean of its divisors is an integer number (374418).

Almost surely, 2^18530850 is an apocalyptic number.

18530850 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 18530850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26958096).

18530850 is an abundant number, since it is smaller than the sum of its proper divisors (35385342).

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

18530850 is a wasteful number, since it uses less digits than its factorization.

18530850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 18530850 is about 4304.7473793476. The cubic root of 18530850 is about 264.6255539846.

The spelling of 18530850 in words is "eighteen million, five hundred thirty thousand, eight hundred fifty".