1813268 has 6 divisors (see below), whose sum is σ = 3173226. Its totient is φ = 906632.

The previous prime is 1813223. The next prime is 1813277. The reversal of 1813268 is 8623181.

It can be written as a sum of positive squares in only one way, i.e., 1643524 + 169744 = 1282^2 + 412^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1813268.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226655 + ... + 226662.

It is an arithmetic number, because the mean of its divisors is an integer number (528871).

2^1813268 is an apocalyptic number.

It is an amenable number.

1813268 is a deficient number, since it is larger than the sum of its proper divisors (1359958).

1813268 is a wasteful number, since it uses less digits than its factorization.

1813268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453321 (or 453319 counting only the distinct ones).

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

The square root of 1813268 is about 1346.5763996150. The cubic root of 1813268 is about 121.9421924466.

The spelling of 1813268 in words is "one million, eight hundred thirteen thousand, two hundred sixty-eight".