1813244 has 6 divisors (see below), whose sum is σ = 3173184. Its totient is φ = 906620.

The previous prime is 1813223. The next prime is 1813277. The reversal of 1813244 is 4423181.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226652 + ... + 226659.

It is an arithmetic number, because the mean of its divisors is an integer number (528864).

2^1813244 is an apocalyptic number.

It is an amenable number.

1813244 is a deficient number, since it is larger than the sum of its proper divisors (1359940).

1813244 is a wasteful number, since it uses less digits than its factorization.

1813244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453315 (or 453313 counting only the distinct ones).

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

The square root of 1813244 is about 1346.5674880971. The cubic root of 1813244 is about 121.9416544446.

The spelling of 1813244 in words is "one million, eight hundred thirteen thousand, two hundred forty-four".