2840642886 has 16 divisors (see below), whose sum is σ = 5686653168. Its totient is φ = 945986400.

The previous prime is 2840642881. The next prime is 2840642939. The reversal of 2840642886 is 6882460482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2840642881) 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, 216745 + ... + 229476.

It is an arithmetic number, because the mean of its divisors is an integer number (355415823).

Almost surely, 2^2840642886 is an apocalyptic number.

2840642886 is an abundant number, since it is smaller than the sum of its proper divisors (2846010282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2840642886 is a wasteful number, since it uses less digits than its factorization.

2840642886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447287.

The product of its (nonzero) digits is 1179648, while the sum is 48.

The square root of 2840642886 is about 53297.6818069979. The cubic root of 2840642886 is about 1416.2465985423.

The spelling of 2840642886 in words is "two billion, eight hundred forty million, six hundred forty-two thousand, eight hundred eighty-six".