2678071849 has 2 divisors, whose sum is σ = 2678071850. Its totient is φ = 2678071848.

The previous prime is 2678071843. The next prime is 2678071853. The reversal of 2678071849 is 9481708762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2443522624 + 234549225 = 49432^2 + 15315^2 .

It is a cyclic number.

It is not a de Polignac number, because 2678071849 - 2⁵ = 2678071817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2678071796 and 2678071805.

It is not a weakly prime, because it can be changed into another prime (2678071843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1339035924 + 1339035925.

It is an arithmetic number, because the mean of its divisors is an integer number (1339035925).

Almost surely, 2^2678071849 is an apocalyptic number.

It is an amenable number.

2678071849 is a deficient number, since it is larger than the sum of its proper divisors (1).

2678071849 is an equidigital number, since it uses as much as digits as its factorization.

2678071849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The square root of 2678071849 is about 51750.0903284236. The cubic root of 2678071849 is about 1388.6967148441.

The spelling of 2678071849 in words is "two billion, six hundred seventy-eight million, seventy-one thousand, eight hundred forty-nine".