18485544 has 96 divisors (see below), whose sum is σ = 58687200. Its totient is φ = 4798080.

The previous prime is 18485539. The next prime is 18485563. The reversal of 18485544 is 44558481.

18485544 is a modest number, since divided by 5544 gives 1848 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12222 + ... + 13650.

It is an arithmetic number, because the mean of its divisors is an integer number (611325).

Almost surely, 2^18485544 is an apocalyptic number.

18485544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18485544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29343600).

18485544 is an abundant number, since it is smaller than the sum of its proper divisors (40201656).

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

18485544 is a wasteful number, since it uses less digits than its factorization.

18485544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1463 (or 1452 counting only the distinct ones).

The product of its digits is 102400, while the sum is 39.

The square root of 18485544 is about 4299.4818292441. The cubic root of 18485544 is about 264.4097173416.

The spelling of 18485544 in words is "eighteen million, four hundred eighty-five thousand, five hundred forty-four".