18430329 has 16 divisors (see below), whose sum is σ = 26725248. Its totient is φ = 11250432.

The previous prime is 18430327. The next prime is 18430333. The reversal of 18430329 is 92303481.

It is not a de Polignac number, because 18430329 - 2¹ = 18430327 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18430296 and 18430305.

It is not an unprimeable number, because it can be changed into a prime (18430327) 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 in 15 ways as a sum of consecutive naturals, for example, 2997 + ... + 6770.

It is an arithmetic number, because the mean of its divisors is an integer number (1670328).

Almost surely, 2^18430329 is an apocalyptic number.

It is an amenable number.

18430329 is a deficient number, since it is larger than the sum of its proper divisors (8294919).

18430329 is a wasteful number, since it uses less digits than its factorization.

18430329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 18430329 is about 4293.0559045976. The cubic root of 18430329 is about 264.1461971466.

The spelling of 18430329 in words is "eighteen million, four hundred thirty thousand, three hundred twenty-nine".