2789912205 has 12 divisors (see below), whose sum is σ = 4835847900. Its totient is φ = 1487953152.

The previous prime is 2789912189. The next prime is 2789912231. The reversal of 2789912205 is 5022199872.

It is a happy number.

2789912205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1467426249 + 1322485956 = 38307^2 + 36366^2 .

It is not a de Polignac number, because 2789912205 - 2⁴ = 2789912189 is a prime.

It is a super-2 number, since 2×2789912205² = 15567220223215924050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 61998049 = 2789912205 / (2 + 7 + 8 + 9 + 9 + 1 + 2 + 2 + 0 + 5).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30998980 + ... + 30999069.

It is an arithmetic number, because the mean of its divisors is an integer number (402987325).

Almost surely, 2^2789912205 is an apocalyptic number.

It is an amenable number.

2789912205 is a deficient number, since it is larger than the sum of its proper divisors (2045935695).

2789912205 is a wasteful number, since it uses less digits than its factorization.

2789912205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61998060 (or 61998057 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 2789912205 is about 52819.6195082850. The cubic root of 2789912205 is about 1407.7650499314.

It can be divided in two parts, 27899 and 12205, that added together give a palindrome (40104).

The spelling of 2789912205 in words is "two billion, seven hundred eighty-nine million, nine hundred twelve thousand, two hundred five".