18324231405 has 24 divisors (see below), whose sum is σ = 31144860192. Its totient is φ = 9198043392.

The previous prime is 18324231379. The next prime is 18324231451. The reversal of 18324231405 is 50413242381.

It is not a de Polignac number, because 18324231405 - 2²⁴ = 18307454189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2109187 + ... + 2117856.

It is an arithmetic number, because the mean of its divisors is an integer number (1297702508).

Almost surely, 2^18324231405 is an apocalyptic number.

18324231405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18324231405 is a deficient number, since it is larger than the sum of its proper divisors (12820628787).

18324231405 is a wasteful number, since it uses less digits than its factorization.

18324231405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4227085 (or 4227068 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 18324231405 its reverse (50413242381), we get a palindrome (68737473786).

The spelling of 18324231405 in words is "eighteen billion, three hundred twenty-four million, two hundred thirty-one thousand, four hundred five".