2878082905 has 4 divisors (see below), whose sum is σ = 3453699492. Its totient is φ = 2302466320.

The previous prime is 2878082899. The next prime is 2878082939. The reversal of 2878082905 is 5092808782.

2878082905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 535135689 + 2342947216 = 23133^2 + 48404^2 .

It is not a de Polignac number, because 2878082905 - 2¹⁹ = 2877558617 is a prime.

It is a super-2 number, since 2×2878082905² = 16566722416106478050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 287808286 + ... + 287808295.

It is an arithmetic number, because the mean of its divisors is an integer number (863424873).

Almost surely, 2^2878082905 is an apocalyptic number.

It is an amenable number.

2878082905 is a deficient number, since it is larger than the sum of its proper divisors (575616587).

2878082905 is an equidigital number, since it uses as much as digits as its factorization.

2878082905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575616586.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 2878082905 is about 53647.7670085158. The cubic root of 2878082905 is about 1422.4415617984.

The spelling of 2878082905 in words is "two billion, eight hundred seventy-eight million, eighty-two thousand, nine hundred five".