2781114197 has 2 divisors, whose sum is σ = 2781114198. Its totient is φ = 2781114196.

The previous prime is 2781114163. The next prime is 2781114307. The reversal of 2781114197 is 7914111872.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1446965521 + 1334148676 = 38039^2 + 36526^2 .

It is a cyclic number.

It is not a de Polignac number, because 2781114197 - 2⁸ = 2781113941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2781114697) 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, 1390557098 + 1390557099.

It is an arithmetic number, because the mean of its divisors is an integer number (1390557099).

Almost surely, 2^2781114197 is an apocalyptic number.

It is an amenable number.

2781114197 is a deficient number, since it is larger than the sum of its proper divisors (1).

2781114197 is an equidigital number, since it uses as much as digits as its factorization.

2781114197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28224, while the sum is 41.

The square root of 2781114197 is about 52736.2702226845. The cubic root of 2781114197 is about 1406.2836926459.

The spelling of 2781114197 in words is "two billion, seven hundred eighty-one million, one hundred fourteen thousand, one hundred ninety-seven".