1813473 has 6 divisors (see below), whose sum is σ = 2619474. Its totient is φ = 1208976.

The previous prime is 1813459. The next prime is 1813477. The reversal of 1813473 is 3743181.

It can be written as a sum of positive squares in only one way, i.e., 1361889 + 451584 = 1167^2 + 672^2 .

It is not a de Polignac number, because 1813473 - 2¹⁰ = 1812449 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1813477) 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 5 ways as a sum of consecutive naturals, for example, 100740 + ... + 100757.

It is an arithmetic number, because the mean of its divisors is an integer number (436579).

2^1813473 is an apocalyptic number.

It is an amenable number.

1813473 is a deficient number, since it is larger than the sum of its proper divisors (806001).

1813473 is a wasteful number, since it uses less digits than its factorization.

1813473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201503 (or 201500 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 1813473 is about 1346.6525164273. The cubic root of 1813473 is about 121.9467876871.

The spelling of 1813473 in words is "one million, eight hundred thirteen thousand, four hundred seventy-three".