4381813 has 8 divisors (see below), whose sum is σ = 4609080. Its totient is φ = 4159680.

The previous prime is 4381807. The next prime is 4381823. The reversal of 4381813 is 3181834.

It can be written as a sum of positive squares in 4 ways, for example, as 47089 + 4334724 = 217^2 + 2082^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4381813 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 (4381823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 531 + ... + 3007.

It is an arithmetic number, because the mean of its divisors is an integer number (576135).

Almost surely, 2^4381813 is an apocalyptic number.

It is an amenable number.

4381813 is a deficient number, since it is larger than the sum of its proper divisors (227267).

4381813 is a wasteful number, since it uses less digits than its factorization.

4381813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567.

The product of its digits is 2304, while the sum is 28.

The square root of 4381813 is about 2093.2780512870. The cubic root of 4381813 is about 163.6381696677.

The spelling of 4381813 in words is "four million, three hundred eighty-one thousand, eight hundred thirteen".