840838163 has 32 divisors (see below), whose sum is σ = 989729280. Its totient is φ = 706717440.

The previous prime is 840838147. The next prime is 840838169. The reversal of 840838163 is 361838048.

It is a happy number.

It is not a de Polignac number, because 840838163 - 2⁴ = 840838147 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 840838163.

It is not an unprimeable number, because it can be changed into a prime (840838169) 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 31 ways as a sum of consecutive naturals, for example, 978428 + ... + 979286.

It is an arithmetic number, because the mean of its divisors is an integer number (30929040).

Almost surely, 2^840838163 is an apocalyptic number.

840838163 is a deficient number, since it is larger than the sum of its proper divisors (148891117).

840838163 is a wasteful number, since it uses less digits than its factorization.

840838163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019.

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 840838163 is about 28997.2095726468. The cubic root of 840838163 is about 943.8525168637.

The spelling of 840838163 in words is "eight hundred forty million, eight hundred thirty-eight thousand, one hundred sixty-three".