18434342 has 4 divisors (see below), whose sum is σ = 27651516. Its totient is φ = 9217170.

The previous prime is 18434329. The next prime is 18434347. The reversal of 18434342 is 24343481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24343481 = 419 ⋅58099.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18434347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4608584 + ... + 4608587.

It is an arithmetic number, because the mean of its divisors is an integer number (6912879).

Almost surely, 2^18434342 is an apocalyptic number.

18434342 is a deficient number, since it is larger than the sum of its proper divisors (9217174).

18434342 is an equidigital number, since it uses as much as digits as its factorization.

18434342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217173.

The product of its digits is 9216, while the sum is 29.

The square root of 18434342 is about 4293.5232618445. The cubic root of 18434342 is about 264.1653673915.

The spelling of 18434342 in words is "eighteen million, four hundred thirty-four thousand, three hundred forty-two".