2878773809 has 4 divisors (see below), whose sum is σ = 3030288240. Its totient is φ = 2727259380.

The previous prime is 2878773757. The next prime is 2878773839. The reversal of 2878773809 is 9083778782.

2878773809 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2878773809 - 2²⁴ = 2861996593 is a prime.

It is a super-3 number, since 3×2878773809³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2878773839) 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, 75757187 + ... + 75757224.

It is an arithmetic number, because the mean of its divisors is an integer number (757572060).

Almost surely, 2^2878773809 is an apocalyptic number.

It is an amenable number.

2878773809 is a deficient number, since it is larger than the sum of its proper divisors (151514431).

2878773809 is a wasteful number, since it uses less digits than its factorization.

2878773809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151514430.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The square root of 2878773809 is about 53654.2058836025. The cubic root of 2878773809 is about 1422.5553750516. Note that the first 3 decimals are identical.

The spelling of 2878773809 in words is "two billion, eight hundred seventy-eight million, seven hundred seventy-three thousand, eight hundred nine".