18424807 has 2 divisors, whose sum is σ = 18424808. Its totient is φ = 18424806.

The previous prime is 18424751. The next prime is 18424811. The reversal of 18424807 is 70842481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18424807 - 2¹¹ = 18422759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18424877) 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, 9212403 + 9212404.

It is an arithmetic number, because the mean of its divisors is an integer number (9212404).

Almost surely, 2^18424807 is an apocalyptic number.

18424807 is a deficient number, since it is larger than the sum of its proper divisors (1).

18424807 is an equidigital number, since it uses as much as digits as its factorization.

18424807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 18424807 is about 4292.4127247971. The cubic root of 18424807 is about 264.1198138049.

The spelling of 18424807 in words is "eighteen million, four hundred twenty-four thousand, eight hundred seven".