4381845 has 32 divisors (see below), whose sum is σ = 7886592. Its totient is φ = 2061312.

The previous prime is 4381823. The next prime is 4381847. The reversal of 4381845 is 5481834.

It is not a de Polignac number, because 4381845 - 2¹¹ = 4379797 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381847) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 3997 + ... + 4973.

It is an arithmetic number, because the mean of its divisors is an integer number (246456).

Almost surely, 2^4381845 is an apocalyptic number.

It is an amenable number.

4381845 is a deficient number, since it is larger than the sum of its proper divisors (3504747).

4381845 is a wasteful number, since it uses less digits than its factorization.

4381845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021.

The product of its digits is 15360, while the sum is 33.

The square root of 4381845 is about 2093.2856947870. The cubic root of 4381845 is about 163.6385680118.

The spelling of 4381845 in words is "four million, three hundred eighty-one thousand, eight hundred forty-five".