18230839 has 8 divisors (see below), whose sum is σ = 20351232. Its totient is φ = 16187640.

The previous prime is 18230837. The next prime is 18230843. The reversal of 18230839 is 93803281.

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 18230839 - 2¹ = 18230837 is a prime.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18230833) 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 7 ways as a sum of consecutive naturals, for example, 18799 + ... + 19744.

It is an arithmetic number, because the mean of its divisors is an integer number (2543904).

Almost surely, 2^18230839 is an apocalyptic number.

18230839 is a deficient number, since it is larger than the sum of its proper divisors (2120393).

18230839 is a wasteful number, since it uses less digits than its factorization.

18230839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38597.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 18230839 is about 4269.7586582850. The cubic root of 18230839 is about 263.1896977010.

The spelling of 18230839 in words is "eighteen million, two hundred thirty thousand, eight hundred thirty-nine".