1841664 has 80 divisors (see below), whose sum is σ = 5401440. Its totient is φ = 552960.

The previous prime is 1841659. The next prime is 1841681. The reversal of 1841664 is 4661481.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16842 + ... + 16950.

It is an arithmetic number, because the mean of its divisors is an integer number (67518).

2^1841664 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 1841664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2700720).

1841664 is an abundant number, since it is smaller than the sum of its proper divisors (3559776).

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

1841664 is a wasteful number, since it uses less digits than its factorization.

1841664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 125 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1841664 is about 1357.0792165530. The cubic root of 1841664 is about 122.5754415210.

The spelling of 1841664 in words is "one million, eight hundred forty-one thousand, six hundred sixty-four".