18071107 has 2 divisors, whose sum is σ = 18071108. Its totient is φ = 18071106.

The previous prime is 18071087. The next prime is 18071111. The reversal of 18071107 is 70117081.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18071107 - 2⁷ = 18070979 is a prime.

It is equal to p_1155553 and since 18071107 and 1155553 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (18071177) 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, 9035553 + 9035554.

It is an arithmetic number, because the mean of its divisors is an integer number (9035554).

Almost surely, 2^18071107 is an apocalyptic number.

18071107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18071107 is an equidigital number, since it uses as much as digits as its factorization.

18071107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 25.

The square root of 18071107 is about 4251.0124676364. The cubic root of 18071107 is about 262.4187842476.

Adding to 18071107 its reverse (70117081), we get a palindrome (88188188).

The spelling of 18071107 in words is "eighteen million, seventy-one thousand, one hundred seven".