2438643 has 8 divisors (see below), whose sum is σ = 3272128. Its totient is φ = 1615464.

The previous prime is 2438629. The next prime is 2438671. The reversal of 2438643 is 3468342.

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

It is not a de Polignac number, because 2438643 - 2⁴ = 2438627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2438643.

It is not an unprimeable number, because it can be changed into a prime (2438603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2005 + ... + 2982.

It is an arithmetic number, because the mean of its divisors is an integer number (409016).

2^2438643 is an apocalyptic number.

2438643 is a deficient number, since it is larger than the sum of its proper divisors (833485).

2438643 is a wasteful number, since it uses less digits than its factorization.

2438643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5153.

The product of its digits is 13824, while the sum is 30.

The square root of 2438643 is about 1561.6155096566. The cubic root of 2438643 is about 134.6013479535.

It can be divided in two parts, 2438 and 643, that added together give a triangular number (3081 = T₇₈).

The spelling of 2438643 in words is "two million, four hundred thirty-eight thousand, six hundred forty-three".