18382079 has 2 divisors, whose sum is σ = 18382080. Its totient is φ = 18382078.

The previous prime is 18382073. The next prime is 18382097. The reversal of 18382079 is 97028381.

Together with next prime (18382097) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18382079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18382073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191039 + 9191040.

It is an arithmetic number, because the mean of its divisors is an integer number (9191040).

Almost surely, 2^18382079 is an apocalyptic number.

18382079 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382079 is an equidigital number, since it uses as much as digits as its factorization.

18382079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 18382079 is about 4287.4326816873. The cubic root of 18382079 is about 263.9154869901.

The spelling of 18382079 in words is "eighteen million, three hundred eighty-two thousand, seventy-nine".