18449496 has 96 divisors (see below), whose sum is σ = 56216160. Its totient is φ = 5423616.

The previous prime is 18449491. The next prime is 18449503. The reversal of 18449496 is 69494481.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18449491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21100 + ... + 21956.

It is an arithmetic number, because the mean of its divisors is an integer number (585585).

Almost surely, 2^18449496 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 18449496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28108080).

18449496 is an abundant number, since it is smaller than the sum of its proper divisors (37766664).

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

18449496 is a wasteful number, since it uses less digits than its factorization.

18449496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 898 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 18449496 is about 4295.2876504374. The cubic root of 18449496 is about 264.2377335137.

The spelling of 18449496 in words is "eighteen million, four hundred forty-nine thousand, four hundred ninety-six".