18430339 has 2 divisors, whose sum is σ = 18430340. Its totient is φ = 18430338.

The previous prime is 18430333. The next prime is 18430351. The reversal of 18430339 is 93303481.

It is a weak prime.

It is an emirp because it is prime and its reverse (93303481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18430339 - 2¹³ = 18422147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18430339.

It is not a weakly prime, because it can be changed into another prime (18430333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215169 + 9215170.

It is an arithmetic number, because the mean of its divisors is an integer number (9215170).

Almost surely, 2^18430339 is an apocalyptic number.

18430339 is a deficient number, since it is larger than the sum of its proper divisors (1).

18430339 is an equidigital number, since it uses as much as digits as its factorization.

18430339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 18430339 is about 4293.0570692689. The cubic root of 18430339 is about 264.1462449204.

It can be divided in two parts, 184303 and 39, that multiplied together give a palindrome (7187817).

The spelling of 18430339 in words is "eighteen million, four hundred thirty thousand, three hundred thirty-nine".