18240107 has 2 divisors, whose sum is σ = 18240108. Its totient is φ = 18240106.

The previous prime is 18240097. The next prime is 18240119. The reversal of 18240107 is 70104281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18240107 - 2⁴ = 18240091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18240137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120053 + 9120054.

It is an arithmetic number, because the mean of its divisors is an integer number (9120054).

Almost surely, 2^18240107 is an apocalyptic number.

18240107 is a deficient number, since it is larger than the sum of its proper divisors (1).

18240107 is an equidigital number, since it uses as much as digits as its factorization.

18240107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 18240107 is about 4270.8438276294. The cubic root of 18240107 is about 263.2342893384.

Adding to 18240107 its reverse (70104281), we get a palindrome (88344388).

The spelling of 18240107 in words is "eighteen million, two hundred forty thousand, one hundred seven".