2081917543 has 2 divisors, whose sum is σ = 2081917544. Its totient is φ = 2081917542.

The previous prime is 2081917531. The next prime is 2081917553. The reversal of 2081917543 is 3457191802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2081917543 is a prime.

It is a super-3 number, since 3×2081917543³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2081917496 and 2081917505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081917553) 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, 1040958771 + 1040958772.

It is an arithmetic number, because the mean of its divisors is an integer number (1040958772).

Almost surely, 2^2081917543 is an apocalyptic number.

2081917543 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081917543 is an equidigital number, since it uses as much as digits as its factorization.

2081917543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2081917543 is about 45628.0346168888. The cubic root of 2081917543 is about 1276.8930061637.

The spelling of 2081917543 in words is "two billion, eighty-one million, nine hundred seventeen thousand, five hundred forty-three".