18016147 has 2 divisors, whose sum is σ = 18016148. Its totient is φ = 18016146.

The previous prime is 18016139. The next prime is 18016157. The reversal of 18016147 is 74161081.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18016147 - 2³ = 18016139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18016157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9008073 + 9008074.

It is an arithmetic number, because the mean of its divisors is an integer number (9008074).

Almost surely, 2^18016147 is an apocalyptic number.

18016147 is a deficient number, since it is larger than the sum of its proper divisors (1).

18016147 is an equidigital number, since it uses as much as digits as its factorization.

18016147 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 18016147 is about 4244.5432027487. The cubic root of 18016147 is about 262.1524810209.

The spelling of 18016147 in words is "eighteen million, sixteen thousand, one hundred forty-seven".