1144813 has 4 divisors (see below), whose sum is σ = 1147068. Its totient is φ = 1142560.

The previous prime is 1144783. The next prime is 1144823. The reversal of 1144813 is 3184411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248004 + 896809 = 498^2 + 947^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144813 - 2⁹ = 1144301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33 + ... + 1513.

It is an arithmetic number, because the mean of its divisors is an integer number (286767).

2^1144813 is an apocalyptic number.

It is an amenable number.

1144813 is a deficient number, since it is larger than the sum of its proper divisors (2255).

1144813 is an equidigital number, since it uses as much as digits as its factorization.

1144813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2254.

The product of its digits is 384, while the sum is 22.

The square root of 1144813 is about 1069.9593450220. The cubic root of 1144813 is about 104.6112000505.

The spelling of 1144813 in words is "one million, one hundred forty-four thousand, eight hundred thirteen".