18000067 has 2 divisors, whose sum is σ = 18000068. Its totient is φ = 18000066.

The previous prime is 18000041. The next prime is 18000089. The reversal of 18000067 is 76000081.

It is an a-pointer prime, because the next prime (18000089) can be obtained adding 18000067 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18000067 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18000767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9000033 + 9000034.

It is an arithmetic number, because the mean of its divisors is an integer number (9000034).

Almost surely, 2^18000067 is an apocalyptic number.

18000067 is a deficient number, since it is larger than the sum of its proper divisors (1).

18000067 is an equidigital number, since it uses as much as digits as its factorization.

18000067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

The square root of 18000067 is about 4242.6485831377. The cubic root of 18000067 is about 262.0744645865.

The spelling of 18000067 in words is "eighteen million, sixty-seven", and thus it is an aban number and an uban number.