18009107 has 2 divisors, whose sum is σ = 18009108. Its totient is φ = 18009106.

The previous prime is 18009073. The next prime is 18009119. The reversal of 18009107 is 70190081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18009107 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18009197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9004553 + 9004554.

It is an arithmetic number, because the mean of its divisors is an integer number (9004554).

Almost surely, 2^18009107 is an apocalyptic number.

18009107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18009107 is an equidigital number, since it uses as much as digits as its factorization.

18009107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 18009107 is about 4243.7138216425. The cubic root of 18009107 is about 262.1183302873.

Adding to 18009107 its reverse (70190081), we get a palindrome (88199188).

The spelling of 18009107 in words is "eighteen million, nine thousand, one hundred seven".