18114407 has 2 divisors, whose sum is σ = 18114408. Its totient is φ = 18114406.

The previous prime is 18114403. The next prime is 18114427. The reversal of 18114407 is 70441181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18114407 - 2² = 18114403 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18114403) 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, 9057203 + 9057204.

It is an arithmetic number, because the mean of its divisors is an integer number (9057204).

Almost surely, 2^18114407 is an apocalyptic number.

18114407 is a deficient number, since it is larger than the sum of its proper divisors (1).

18114407 is an equidigital number, since it uses as much as digits as its factorization.

18114407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 18114407 is about 4256.1023248977. The cubic root of 18114407 is about 262.6282100830.

Adding to 18114407 its reverse (70441181), we get a palindrome (88555588).

The spelling of 18114407 in words is "eighteen million, one hundred fourteen thousand, four hundred seven".