18145927 has 2 divisors, whose sum is σ = 18145928. Its totient is φ = 18145926.

The previous prime is 18145921. The next prime is 18145937. The reversal of 18145927 is 72954181.

It is a weak prime.

It is an emirp because it is prime and its reverse (72954181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18145927 - 2¹⁵ = 18113159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18145921) 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, 9072963 + 9072964.

It is an arithmetic number, because the mean of its divisors is an integer number (9072964).

Almost surely, 2^18145927 is an apocalyptic number.

18145927 is a deficient number, since it is larger than the sum of its proper divisors (1).

18145927 is an equidigital number, since it uses as much as digits as its factorization.

18145927 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 37.

The square root of 18145927 is about 4259.8036339719. The cubic root of 18145927 is about 262.7804506801.

The spelling of 18145927 in words is "eighteen million, one hundred forty-five thousand, nine hundred twenty-seven".