2112861791 has 2 divisors, whose sum is σ = 2112861792. Its totient is φ = 2112861790.

The previous prime is 2112861781. The next prime is 2112861797. The reversal of 2112861791 is 1971682112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2112861791 - 2¹⁴ = 2112845407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112861797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056430895 + 1056430896.

It is an arithmetic number, because the mean of its divisors is an integer number (1056430896).

Almost surely, 2^2112861791 is an apocalyptic number.

2112861791 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112861791 is an equidigital number, since it uses as much as digits as its factorization.

2112861791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 38.

The square root of 2112861791 is about 45965.8763758508. The cubic root of 2112861791 is about 1283.1882173725.

The spelling of 2112861791 in words is "two billion, one hundred twelve million, eight hundred sixty-one thousand, seven hundred ninety-one".