2165438 has 8 divisors (see below), whose sum is σ = 3543480. Its totient is φ = 984280.

The previous prime is 2165413. The next prime is 2165453. The reversal of 2165438 is 8345612.

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

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 2165438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49193 + ... + 49236.

It is an arithmetic number, because the mean of its divisors is an integer number (442935).

2^2165438 is an apocalyptic number.

2165438 is a deficient number, since it is larger than the sum of its proper divisors (1378042).

2165438 is a wasteful number, since it uses less digits than its factorization.

2165438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98442.

The product of its digits is 5760, while the sum is 29.

The square root of 2165438 is about 1471.5427278880. The cubic root of 2165438 is about 129.3744702694.

The spelling of 2165438 in words is "two million, one hundred sixty-five thousand, four hundred thirty-eight".