18341823 has 4 divisors (see below), whose sum is σ = 24455768. Its totient is φ = 12227880.

The previous prime is 18341789. The next prime is 18341831. The reversal of 18341823 is 32814381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32814381 = 3 ⋅10938127.

It is not a de Polignac number, because 18341823 - 2⁸ = 18341567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18341893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3056968 + ... + 3056973.

It is an arithmetic number, because the mean of its divisors is an integer number (6113942).

Almost surely, 2^18341823 is an apocalyptic number.

18341823 is a deficient number, since it is larger than the sum of its proper divisors (6113945).

18341823 is an equidigital number, since it uses as much as digits as its factorization.

18341823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6113944.

The product of its digits is 4608, while the sum is 30.

The square root of 18341823 is about 4282.7354576252. The cubic root of 18341823 is about 263.7226914816.

The spelling of 18341823 in words is "eighteen million, three hundred forty-one thousand, eight hundred twenty-three".