18350418 has 8 divisors (see below), whose sum is σ = 36700848. Its totient is φ = 6116804.

The previous prime is 18350413. The next prime is 18350443. The reversal of 18350418 is 81405381.

It is a sphenic number, since it is the product of 3 distinct primes.

18350418 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (18350413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1529196 + ... + 1529207.

It is an arithmetic number, because the mean of its divisors is an integer number (4587606).

Almost surely, 2^18350418 is an apocalyptic number.

18350418 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18350418 is a wasteful number, since it uses less digits than its factorization.

18350418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058408.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 18350418 is about 4283.7387875546. The cubic root of 18350418 is about 263.7638786375.

Adding to 18350418 its reverse (81405381), we get a palindrome (99755799).

The spelling of 18350418 in words is "eighteen million, three hundred fifty thousand, four hundred eighteen".