5538918 has 64 divisors (see below), whose sum is σ = 14561280. Its totient is φ = 1360800.

The previous prime is 5538901. The next prime is 5538919. The reversal of 5538918 is 8198355.

It is a super-2 number, since 2×5538918² = 61359225221448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5538919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8463 + ... + 9093.

It is an arithmetic number, because the mean of its divisors is an integer number (227520).

Almost surely, 2^5538918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5538918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7280640).

5538918 is an abundant number, since it is smaller than the sum of its proper divisors (9022362).

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

5538918 is a wasteful number, since it uses less digits than its factorization.

5538918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673.

The product of its digits is 43200, while the sum is 39.

The square root of 5538918 is about 2353.4905990889. The cubic root of 5538918 is about 176.9327843348.

The spelling of 5538918 in words is "five million, five hundred thirty-eight thousand, nine hundred eighteen".