18343414 has 4 divisors (see below), whose sum is σ = 27515124. Its totient is φ = 9171706.

The previous prime is 18343393. The next prime is 18343421. The reversal of 18343414 is 41434381.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41434381 = 1621 ⋅25561.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4585852 + ... + 4585855.

It is an arithmetic number, because the mean of its divisors is an integer number (6878781).

Almost surely, 2^18343414 is an apocalyptic number.

18343414 is a deficient number, since it is larger than the sum of its proper divisors (9171710).

18343414 is an equidigital number, since it uses as much as digits as its factorization.

18343414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9171709.

The product of its digits is 4608, while the sum is 28.

The square root of 18343414 is about 4282.9211993685. The cubic root of 18343414 is about 263.7303165084.

Adding to 18343414 its reverse (41434381), we get a palindrome (59777795).

The spelling of 18343414 in words is "eighteen million, three hundred forty-three thousand, four hundred fourteen".