1813424 has 40 divisors (see below), whose sum is σ = 3816720. Its totient is φ = 831488.

The previous prime is 1813421. The next prime is 1813429. The reversal of 1813424 is 4243181.

It is a self number, because there is not a number n which added to its sum of digits gives 1813424.

It is not an unprimeable number, because it can be changed into a prime (1813421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15992 + ... + 16104.

It is an arithmetic number, because the mean of its divisors is an integer number (95418).

2^1813424 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 1813424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1908360).

1813424 is an abundant number, since it is smaller than the sum of its proper divisors (2003296).

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

1813424 is a wasteful number, since it uses less digits than its factorization.

1813424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its digits is 768, while the sum is 23.

The square root of 1813424 is about 1346.6343230439. The cubic root of 1813424 is about 121.9456893440.

The spelling of 1813424 in words is "one million, eight hundred thirteen thousand, four hundred twenty-four".