18841307 has 2 divisors, whose sum is σ = 18841308. Its totient is φ = 18841306.

The previous prime is 18841289. The next prime is 18841343. The reversal of 18841307 is 70314881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18841307 - 2⁶ = 18841243 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18841357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9420653 + 9420654.

It is an arithmetic number, because the mean of its divisors is an integer number (9420654).

Almost surely, 2^18841307 is an apocalyptic number.

18841307 is a deficient number, since it is larger than the sum of its proper divisors (1).

18841307 is an equidigital number, since it uses as much as digits as its factorization.

18841307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18841307 is about 4340.6574386837. The cubic root of 18841307 is about 266.0951804784.

The spelling of 18841307 in words is "eighteen million, eight hundred forty-one thousand, three hundred seven".