18386107 has 2 divisors, whose sum is σ = 18386108. Its totient is φ = 18386106.

The previous prime is 18386083. The next prime is 18386149. The reversal of 18386107 is 70168381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18386107 - 2⁷ = 18385979 is a prime.

It is not a weakly prime, because it can be changed into another prime (18386507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9193053 + 9193054.

It is an arithmetic number, because the mean of its divisors is an integer number (9193054).

Almost surely, 2^18386107 is an apocalyptic number.

18386107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18386107 is an equidigital number, since it uses as much as digits as its factorization.

18386107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18386107 is about 4287.9024009415. The cubic root of 18386107 is about 263.9347625382.

The spelling of 18386107 in words is "eighteen million, three hundred eighty-six thousand, one hundred seven".