18023342 has 4 divisors (see below), whose sum is σ = 27035016. Its totient is φ = 9011670.

The previous prime is 18023323. The next prime is 18023347. The reversal of 18023342 is 24332081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24332081 = 2591 ⋅9391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18023347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4505834 + ... + 4505837.

It is an arithmetic number, because the mean of its divisors is an integer number (6758754).

Almost surely, 2^18023342 is an apocalyptic number.

18023342 is a deficient number, since it is larger than the sum of its proper divisors (9011674).

18023342 is an equidigital number, since it uses as much as digits as its factorization.

18023342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9011673.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 18023342 is about 4245.3906769578. The cubic root of 18023342 is about 262.1873744615.

The spelling of 18023342 in words is "eighteen million, twenty-three thousand, three hundred forty-two".