18120007 has 2 divisors, whose sum is σ = 18120008. Its totient is φ = 18120006.

The previous prime is 18119971. The next prime is 18120013. The reversal of 18120007 is 70002181.

It is a strong prime.

It is an emirp because it is prime and its reverse (70002181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18120007 - 2⁷ = 18119879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18120077) 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, 9060003 + 9060004.

It is an arithmetic number, because the mean of its divisors is an integer number (9060004).

Almost surely, 2^18120007 is an apocalyptic number.

18120007 is a deficient number, since it is larger than the sum of its proper divisors (1).

18120007 is an equidigital number, since it uses as much as digits as its factorization.

18120007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 19.

The square root of 18120007 is about 4256.7601529802. The cubic root of 18120007 is about 262.6552707986.

Adding to 18120007 its reverse (70002181), we get a palindrome (88122188).

The spelling of 18120007 in words is "eighteen million, one hundred twenty thousand, seven".