18814530 has 48 divisors (see below), whose sum is σ = 52531200. Its totient is φ = 4300128.

The previous prime is 18814513. The next prime is 18814571. The reversal of 18814530 is 3541881.

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4930 + ... + 7869.

It is an arithmetic number, because the mean of its divisors is an integer number (1094400).

Almost surely, 2^18814530 is an apocalyptic number.

18814530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18814530 is an abundant number, since it is smaller than the sum of its proper divisors (33716670).

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

18814530 is a wasteful number, since it uses less digits than its factorization.

18814530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12823 (or 12816 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18814530 is about 4337.5719014213. The cubic root of 18814530 is about 265.9690638076.

The spelling of 18814530 in words is "eighteen million, eight hundred fourteen thousand, five hundred thirty".