2108278243 has 2 divisors, whose sum is σ = 2108278244. Its totient is φ = 2108278242.

The previous prime is 2108278229. The next prime is 2108278267. The reversal of 2108278243 is 3428728012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2108278243 - 2²⁵ = 2074723811 is a prime.

It is not a weakly prime, because it can be changed into another prime (2108278223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054139121 + 1054139122.

It is an arithmetic number, because the mean of its divisors is an integer number (1054139122).

Almost surely, 2^2108278243 is an apocalyptic number.

2108278243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108278243 is an equidigital number, since it uses as much as digits as its factorization.

2108278243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 2108278243 is about 45915.9911468761. The cubic root of 2108278243 is about 1282.2596485145.

The spelling of 2108278243 in words is "two billion, one hundred eight million, two hundred seventy-eight thousand, two hundred forty-three".