18084630 has 16 divisors (see below), whose sum is σ = 43403184. Its totient is φ = 4822560.

The previous prime is 18084629. The next prime is 18084641. The reversal of 18084630 is 3648081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 602821 = 18084630 / (1 + 8 + 0 + 8 + 4 + 6 + 3 + 0).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301381 + ... + 301440.

It is an arithmetic number, because the mean of its divisors is an integer number (2712699).

Almost surely, 2^18084630 is an apocalyptic number.

18084630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18084630 is an abundant number, since it is smaller than the sum of its proper divisors (25318554).

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

18084630 is a wasteful number, since it uses less digits than its factorization.

18084630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602831.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18084630 is about 4252.6027324452. The cubic root of 18084630 is about 262.4842258095.

The spelling of 18084630 in words is "eighteen million, eighty-four thousand, six hundred thirty".