18123414 has 16 divisors (see below), whose sum is σ = 37226928. Its totient is φ = 5877792.

The previous prime is 18123367. The next prime is 18123419. The reversal of 18123414 is 41432181.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18123419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40597 + ... + 41040.

It is an arithmetic number, because the mean of its divisors is an integer number (2326683).

Almost surely, 2^18123414 is an apocalyptic number.

18123414 is an abundant number, since it is smaller than the sum of its proper divisors (19103514).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18123414 is a wasteful number, since it uses less digits than its factorization.

18123414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81679.

The product of its digits is 768, while the sum is 24.

The square root of 18123414 is about 4257.1603211531. The cubic root of 18123414 is about 262.6717316169.

Adding to 18123414 its reverse (41432181), we get a palindrome (59555595).

The spelling of 18123414 in words is "eighteen million, one hundred twenty-three thousand, four hundred fourteen".