18030087 has 8 divisors (see below), whose sum is σ = 26711280. Its totient is φ = 12020040.

The previous prime is 18030079. The next prime is 18030101. The reversal of 18030087 is 78003081.

It is not a de Polignac number, because 18030087 - 2³ = 18030079 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 667781 = 18030087 / (1 + 8 + 0 + 3 + 0 + 0 + 8 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 18030087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18020087) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333864 + ... + 333917.

It is an arithmetic number, because the mean of its divisors is an integer number (3338910).

Almost surely, 2^18030087 is an apocalyptic number.

18030087 is a deficient number, since it is larger than the sum of its proper divisors (8681193).

18030087 is an equidigital number, since it uses as much as digits as its factorization.

18030087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667790 (or 667784 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 18030087 is about 4246.1849936149. The cubic root of 18030087 is about 262.2200771141.

The spelling of 18030087 in words is "eighteen million, thirty thousand, eighty-seven".