3821118 has 48 divisors (see below), whose sum is σ = 9135504. Its totient is φ = 1061760.

The previous prime is 3821117. The next prime is 3821119. The reversal of 3821118 is 8111283.

It is an interprime number because it is at equal distance from previous prime (3821117) and next prime (3821119).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821117) 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 23 ways as a sum of consecutive naturals, for example, 11896 + ... + 12212.

It is an arithmetic number, because the mean of its divisors is an integer number (190323).

Almost surely, 2^3821118 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3821118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4567752).

3821118 is an abundant number, since it is smaller than the sum of its proper divisors (5314386).

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

3821118 is a wasteful number, since it uses less digits than its factorization.

3821118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377 (or 370 counting only the distinct ones).

The product of its digits is 384, while the sum is 24.

The square root of 3821118 is about 1954.7680169268. The cubic root of 3821118 is about 156.3376152883.

It can be divided in two parts, 3 and 821118, that added together give a triangular number (821121 = T₁₂₈₁).

The spelling of 3821118 in words is "three million, eight hundred twenty-one thousand, one hundred eighteen".