2840642885 has 8 divisors (see below), whose sum is σ = 3459649056. Its totient is φ = 2238595920.

The previous prime is 2840642881. The next prime is 2840642939. The reversal of 2840642885 is 5882460482.

It is a happy number.

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

It is not a de Polignac number, because 2840642885 - 2² = 2840642881 is a prime.

It is a super-2 number, since 2×2840642885² = 16138504000202246450, which contains 22 as substring.

It is a Duffinian number.

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, 4239431 + ... + 4240100.

It is an arithmetic number, because the mean of its divisors is an integer number (432456132).

Almost surely, 2^2840642885 is an apocalyptic number.

It is an amenable number.

2840642885 is a deficient number, since it is larger than the sum of its proper divisors (619006171).

2840642885 is an equidigital number, since it uses as much as digits as its factorization.

2840642885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8479603.

The product of its (nonzero) digits is 983040, while the sum is 47.

The square root of 2840642885 is about 53297.6817976167. The cubic root of 2840642885 is about 1416.2465983761.

The spelling of 2840642885 in words is "two billion, eight hundred forty million, six hundred forty-two thousand, eight hundred eighty-five".