18416356 has 48 divisors (see below), whose sum is σ = 38886400. Its totient is φ = 7620480.

The previous prime is 18416351. The next prime is 18416371. The reversal of 18416356 is 65361481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18416351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42316 + ... + 42748.

Almost surely, 2^18416356 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18416356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19443200).

18416356 is an abundant number, since it is smaller than the sum of its proper divisors (20470044).

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

18416356 is a wasteful number, since it uses less digits than its factorization.

18416356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 473 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 18416356 is about 4291.4282004946. The cubic root of 18416356 is about 264.0794259029.

The spelling of 18416356 in words is "eighteen million, four hundred sixteen thousand, three hundred fifty-six".