18448536 has 64 divisors (see below), whose sum is σ = 49420800. Its totient is φ = 5718528.

The previous prime is 18448523. The next prime is 18448537. The reversal of 18448536 is 63584481.

It is a junction number, because it is equal to n+sod(n) for n = 18448494 and 18448503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18448537) 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, 41805 + ... + 42243.

It is an arithmetic number, because the mean of its divisors is an integer number (772200).

Almost surely, 2^18448536 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 18448536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24710400).

18448536 is an abundant number, since it is smaller than the sum of its proper divisors (30972264).

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

18448536 is a wasteful number, since it uses less digits than its factorization.

18448536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 564 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 18448536 is about 4295.1758986100. The cubic root of 18448536 is about 264.2331503240.

The spelling of 18448536 in words is "eighteen million, four hundred forty-eight thousand, five hundred thirty-six".