3581118 has 64 divisors (see below), whose sum is σ = 8709120. Its totient is φ = 1086336.

The previous prime is 3581117. The next prime is 3581129. The reversal of 3581118 is 8111853.

It is a super-2 number, since 2×3581118² = 25648812259848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3581091 and 3581100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3581113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43105 + ... + 43187.

It is an arithmetic number, because the mean of its divisors is an integer number (136080).

Almost surely, 2^3581118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3581118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4354560).

3581118 is an abundant number, since it is smaller than the sum of its proper divisors (5128002).

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

3581118 is a wasteful number, since it uses less digits than its factorization.

3581118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 152 counting only the distinct ones).

The product of its digits is 960, while the sum is 27.

The square root of 3581118 is about 1892.3842104604. The cubic root of 3581118 is about 152.9934637731.

The spelling of 3581118 in words is "three million, five hundred eighty-one thousand, one hundred eighteen".