18130087 has 2 divisors, whose sum is σ = 18130088. Its totient is φ = 18130086.

The previous prime is 18130069. The next prime is 18130093. The reversal of 18130087 is 78003181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18130087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18130067) 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 as a sum of consecutive naturals, namely, 9065043 + 9065044.

It is an arithmetic number, because the mean of its divisors is an integer number (9065044).

Almost surely, 2^18130087 is an apocalyptic number.

18130087 is a deficient number, since it is larger than the sum of its proper divisors (1).

18130087 is an equidigital number, since it uses as much as digits as its factorization.

18130087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 18130087 is about 4257.9439874193. The cubic root of 18130087 is about 262.7039660400.

The spelling of 18130087 in words is "eighteen million, one hundred thirty thousand, eighty-seven".