2111862443 has 2 divisors, whose sum is σ = 2111862444. Its totient is φ = 2111862442.

The previous prime is 2111862427. The next prime is 2111862463. The reversal of 2111862443 is 3442681112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2111862443 - 2⁴ = 2111862427 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111862413) 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, 1055931221 + 1055931222.

It is an arithmetic number, because the mean of its divisors is an integer number (1055931222).

Almost surely, 2^2111862443 is an apocalyptic number.

2111862443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111862443 is an equidigital number, since it uses as much as digits as its factorization.

2111862443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 2111862443 is about 45955.0045479271. The cubic root of 2111862443 is about 1282.9858766714.

The spelling of 2111862443 in words is "two billion, one hundred eleven million, eight hundred sixty-two thousand, four hundred forty-three".