18500130 has 64 divisors (see below), whose sum is σ = 53827200. Its totient is φ = 4484160.

The previous prime is 18500117. The next prime is 18500161. The reversal of 18500130 is 3100581.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145 + ... + 6084.

It is an arithmetic number, because the mean of its divisors is an integer number (841050).

Almost surely, 2^18500130 is an apocalyptic number.

18500130 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 18500130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26913600).

18500130 is an abundant number, since it is smaller than the sum of its proper divisors (35327070).

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

18500130 is a wasteful number, since it uses less digits than its factorization.

18500130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6256 (or 6250 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 18500130 is about 4301.1777456878. The cubic root of 18500130 is about 264.4792431327.

The spelling of 18500130 in words is "eighteen million, five hundred thousand, one hundred thirty".