18434359 has 2 divisors, whose sum is σ = 18434360. Its totient is φ = 18434358.

The previous prime is 18434357. The next prime is 18434363. The reversal of 18434359 is 95343481.

It is a weak prime.

It is an emirp because it is prime and its reverse (95343481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18434359 - 2¹ = 18434357 is a prime.

Together with 18434357, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18434357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9217179 + 9217180.

It is an arithmetic number, because the mean of its divisors is an integer number (9217180).

Almost surely, 2^18434359 is an apocalyptic number.

18434359 is a deficient number, since it is larger than the sum of its proper divisors (1).

18434359 is an equidigital number, since it uses as much as digits as its factorization.

18434359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 18434359 is about 4293.5252415701. The cubic root of 18434359 is about 264.1654485952.

It can be divided in two parts, 184 and 34359, that added together give a palindrome (34543).

The spelling of 18434359 in words is "eighteen million, four hundred thirty-four thousand, three hundred fifty-nine".