18385030 has 32 divisors (see below), whose sum is σ = 33929280. Its totient is φ = 7171200.

The previous prime is 18385021. The next prime is 18385033. The reversal of 18385030 is 3058381.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 18385030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18385033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110007 + ... + 110173.

It is an arithmetic number, because the mean of its divisors is an integer number (1060290).

Almost surely, 2^18385030 is an apocalyptic number.

18385030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18385030 is a deficient number, since it is larger than the sum of its proper divisors (15544250).

18385030 is a wasteful number, since it uses less digits than its factorization.

18385030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18385030 is about 4287.7768132215. The cubic root of 18385030 is about 263.9296089497.

The spelling of 18385030 in words is "eighteen million, three hundred eighty-five thousand, thirty".