18224071 has 2 divisors, whose sum is σ = 18224072. Its totient is φ = 18224070.

The previous prime is 18224057. The next prime is 18224077. The reversal of 18224071 is 17042281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18224071 - 2⁹ = 18223559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18224077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9112035 + 9112036.

It is an arithmetic number, because the mean of its divisors is an integer number (9112036).

Almost surely, 2^18224071 is an apocalyptic number.

18224071 is a deficient number, since it is larger than the sum of its proper divisors (1).

18224071 is an equidigital number, since it uses as much as digits as its factorization.

18224071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 18224071 is about 4268.9660340649. The cubic root of 18224071 is about 263.1571249023.

The spelling of 18224071 in words is "eighteen million, two hundred twenty-four thousand, seventy-one".