918544 has 40 divisors (see below), whose sum is σ = 2062368. Its totient is φ = 391680.

The previous prime is 918539. The next prime is 918563. The reversal of 918544 is 445819.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2839 + ... + 3145.

2⁹¹⁸⁵⁴⁴ 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 918544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031184).

918544 is an abundant number, since it is smaller than the sum of its proper divisors (1143824).

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

918544 is a wasteful number, since it uses less digits than its factorization.

918544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343 (or 337 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

The square root of 918544 is about 958.4070116605. The cubic root of 918544 is about 97.2075479470.

It can be divided in two parts, 9185 and 44, that added together give a palindrome (9229).

The spelling of 918544 in words is "nine hundred eighteen thousand, five hundred forty-four".