18575130 has 64 divisors (see below), whose sum is σ = 51321600. Its totient is φ = 4214784.

The previous prime is 18575129. The next prime is 18575131. The reversal of 18575130 is 3157581.

It is an interprime number because it is at equal distance from previous prime (18575129) and next prime (18575131).

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 (18575131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41146 + ... + 41594.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^18575130 is an apocalyptic number.

18575130 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 18575130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25660800).

18575130 is an abundant number, since it is smaller than the sum of its proper divisors (32746470).

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

18575130 is a wasteful number, since it uses less digits than its factorization.

18575130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 18575130 is about 4309.8874695286. The cubic root of 18575130 is about 264.8361631166.

The spelling of 18575130 in words is "eighteen million, five hundred seventy-five thousand, one hundred thirty".