18414436 has 24 divisors (see below), whose sum is σ = 33025664. Its totient is φ = 8981280.

The previous prime is 18414433. The next prime is 18414491. The reversal of 18414436 is 63441481.

It is a junction number, because it is equal to n+sod(n) for n = 18414398 and 18414407.

It is not an unprimeable number, because it can be changed into a prime (18414433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39541 + ... + 40003.

Almost surely, 2^18414436 is an apocalyptic number.

It is an amenable number.

18414436 is a deficient number, since it is larger than the sum of its proper divisors (14611228).

18414436 is a wasteful number, since it uses less digits than its factorization.

18414436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691 (or 689 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 18414436 is about 4291.2044929134. The cubic root of 18414436 is about 264.0702483704.

It can be divided in two parts, 1841443 and 6, that added together give a square (1841449 = 1357²).

The spelling of 18414436 in words is "eighteen million, four hundred fourteen thousand, four hundred thirty-six".