18026329 has 8 divisors (see below), whose sum is σ = 18414720. Its totient is φ = 17640816.

The previous prime is 18026321. The next prime is 18026357. The reversal of 18026329 is 92362081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18026329 - 2³ = 18026321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18026329.

It is not an unprimeable number, because it can be changed into a prime (18026321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15792 + ... + 16894.

It is an arithmetic number, because the mean of its divisors is an integer number (2301840).

Almost surely, 2^18026329 is an apocalyptic number.

It is an amenable number.

18026329 is a deficient number, since it is larger than the sum of its proper divisors (388391).

18026329 is a wasteful number, since it uses less digits than its factorization.

18026329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18026329 is about 4245.7424556843. The cubic root of 18026329 is about 262.2018577248.

The spelling of 18026329 in words is "eighteen million, twenty-six thousand, three hundred twenty-nine".