2878371289 has 2 divisors, whose sum is σ = 2878371290. Its totient is φ = 2878371288.

The previous prime is 2878371283. The next prime is 2878371323. The reversal of 2878371289 is 9821738782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2873496025 + 4875264 = 53605^2 + 2208^2 .

It is a cyclic number.

It is not a de Polignac number, because 2878371289 - 2¹³ = 2878363097 is a prime.

It is not a weakly prime, because it can be changed into another prime (2878371283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1439185644 + 1439185645.

It is an arithmetic number, because the mean of its divisors is an integer number (1439185645).

Almost surely, 2^2878371289 is an apocalyptic number.

It is an amenable number.

2878371289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2878371289 is an equidigital number, since it uses as much as digits as its factorization.

2878371289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 55.

The square root of 2878371289 is about 53650.4546951841. The cubic root of 2878371289 is about 1422.4890697752.

The spelling of 2878371289 in words is "two billion, eight hundred seventy-eight million, three hundred seventy-one thousand, two hundred eighty-nine".