4918644 has 120 divisors (see below), whose sum is σ = 14636160. Its totient is φ = 1430784.

The previous prime is 4918637. The next prime is 4918649. The reversal of 4918644 is 4468194.

It is a happy number.

4918644 is a `hidden beast` number, since 4 + 9 + 1 + 8 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4918599 and 4918608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4918649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 104629 + ... + 104675.

It is an arithmetic number, because the mean of its divisors is an integer number (121968).

Almost surely, 2^4918644 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 4918644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7318080).

4918644 is an abundant number, since it is smaller than the sum of its proper divisors (9717516).

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

4918644 is a wasteful number, since it uses less digits than its factorization.

4918644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99 (or 88 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 4918644 is about 2217.8016142117. The cubic root of 4918644 is about 170.0650731271.

The spelling of 4918644 in words is "four million, nine hundred eighteen thousand, six hundred forty-four".