18145327 has 2 divisors, whose sum is σ = 18145328. Its totient is φ = 18145326.

The previous prime is 18145319. The next prime is 18145343. The reversal of 18145327 is 72354181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18145327 - 2³ = 18145319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18145927) 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, 9072663 + 9072664.

It is an arithmetic number, because the mean of its divisors is an integer number (9072664).

Almost surely, 2^18145327 is an apocalyptic number.

18145327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18145327 is an equidigital number, since it uses as much as digits as its factorization.

18145327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 31.

The square root of 18145327 is about 4259.7332076082. The cubic root of 18145327 is about 262.7775543459. Note that the first 3 decimals are identical.

The spelling of 18145327 in words is "eighteen million, one hundred forty-five thousand, three hundred twenty-seven".