1866348 has 48 divisors (see below), whose sum is σ = 5281920. Its totient is φ = 565200.

The previous prime is 1866343. The next prime is 1866349. The reversal of 1866348 is 8436681.

It is a happy number.

1866348 is a `hidden beast` number, since 18 + 6 + 634 + 8 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (1866341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 403 + ... + 1973.

It is an arithmetic number, because the mean of its divisors is an integer number (110040).

2^1866348 is an apocalyptic number.

1866348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1866348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2640960).

1866348 is an abundant number, since it is smaller than the sum of its proper divisors (3415572).

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

1866348 is a wasteful number, since it uses less digits than its factorization.

1866348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595 (or 1587 counting only the distinct ones).

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

The square root of 1866348 is about 1366.1434770916. The cubic root of 1866348 is about 123.1206430815.

It can be divided in two parts, 18 and 66348, that added together give a palindrome (66366).

The spelling of 1866348 in words is "one million, eight hundred sixty-six thousand, three hundred forty-eight".