2078784511 has 4 divisors (see below), whose sum is σ = 2079345112. Its totient is φ = 2078223912.

The previous prime is 2078784469. The next prime is 2078784529. The reversal of 2078784511 is 1154878702.

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

It is a cyclic number.

It is not a de Polignac number, because 2078784511 - 2²³ = 2070395903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2078784581) 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, 274701 + ... + 282166.

It is an arithmetic number, because the mean of its divisors is an integer number (519836278).

Almost surely, 2^2078784511 is an apocalyptic number.

2078784511 is a deficient number, since it is larger than the sum of its proper divisors (560601).

2078784511 is an equidigital number, since it uses as much as digits as its factorization.

2078784511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560600.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 2078784511 is about 45593.6893769302. The cubic root of 2078784511 is about 1276.2521618421.

The spelling of 2078784511 in words is "two billion, seventy-eight million, seven hundred eighty-four thousand, five hundred eleven".