2159638 has 8 divisors (see below), whose sum is σ = 3488688. Its totient is φ = 996744.

The previous prime is 2159627. The next prime is 2159639. The reversal of 2159638 is 8369512.

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

It is a d-powerful number, because it can be written as 2¹⁶ + 1 + 5⁸ + 9² + 6⁸ + 3⁹ + 8⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2159639) 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, 41506 + ... + 41557.

It is an arithmetic number, because the mean of its divisors is an integer number (436086).

2^2159638 is an apocalyptic number.

2159638 is a deficient number, since it is larger than the sum of its proper divisors (1329050).

2159638 is a wasteful number, since it uses less digits than its factorization.

2159638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83078.

The product of its digits is 12960, while the sum is 34.

The square root of 2159638 is about 1469.5706856086. The cubic root of 2159638 is about 129.2588596526.

The spelling of 2159638 in words is "two million, one hundred fifty-nine thousand, six hundred thirty-eight".