18130727 has 2 divisors, whose sum is σ = 18130728. Its totient is φ = 18130726.

The previous prime is 18130681. The next prime is 18130729. The reversal of 18130727 is 72703181.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18130727 - 2⁶ = 18130663 is a prime.

Together with 18130729, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18130727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18130729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9065363 + 9065364.

It is an arithmetic number, because the mean of its divisors is an integer number (9065364).

Almost surely, 2^18130727 is an apocalyptic number.

18130727 is a deficient number, since it is larger than the sum of its proper divisors (1).

18130727 is an equidigital number, since it uses as much as digits as its factorization.

18130727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 18130727 is about 4258.0191403985. The cubic root of 18130727 is about 262.7070571919.

The spelling of 18130727 in words is "eighteen million, one hundred thirty thousand, seven hundred twenty-seven".