2105145443 has 2 divisors, whose sum is σ = 2105145444. Its totient is φ = 2105145442.

The previous prime is 2105145439. The next prime is 2105145571. The reversal of 2105145443 is 3445415012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2105145443 - 2² = 2105145439 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105145433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052572721 + 1052572722.

It is an arithmetic number, because the mean of its divisors is an integer number (1052572722).

Almost surely, 2^2105145443 is an apocalyptic number.

2105145443 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105145443 is an equidigital number, since it uses as much as digits as its factorization.

2105145443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2105145443 is about 45881.8639878547. The cubic root of 2105145443 is about 1281.6242082913.

The spelling of 2105145443 in words is "two billion, one hundred five million, one hundred forty-five thousand, four hundred forty-three".