1813628 has 24 divisors (see below), whose sum is σ = 3402000. Its totient is φ = 843008.

The previous prime is 1813627. The next prime is 1813639. The reversal of 1813628 is 8263181.

It is a self number, because there is not a number n which added to its sum of digits gives 1813628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813627) 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 7 ways as a sum of consecutive naturals, for example, 10043 + ... + 10221.

It is an arithmetic number, because the mean of its divisors is an integer number (141750).

2^1813628 is an apocalyptic number.

It is an amenable number.

1813628 is a deficient number, since it is larger than the sum of its proper divisors (1588372).

1813628 is a wasteful number, since it uses less digits than its factorization.

1813628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349 (or 347 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 1813628 is about 1346.7100653073. The cubic root of 1813628 is about 121.9502619073.

The spelling of 1813628 in words is "one million, eight hundred thirteen thousand, six hundred twenty-eight".