2099185943 has 2 divisors, whose sum is σ = 2099185944. Its totient is φ = 2099185942.

The previous prime is 2099185939. The next prime is 2099185973. The reversal of 2099185943 is 3495819902.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2099185943 - 2² = 2099185939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2099185891 and 2099185900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2099185973) 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, 1049592971 + 1049592972.

It is an arithmetic number, because the mean of its divisors is an integer number (1049592972).

Almost surely, 2^2099185943 is an apocalyptic number.

2099185943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2099185943 is an equidigital number, since it uses as much as digits as its factorization.

2099185943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 2099185943 is about 45816.8739985608. The cubic root of 2099185943 is about 1280.4136730566.

The spelling of 2099185943 in words is "two billion, ninety-nine million, one hundred eighty-five thousand, nine hundred forty-three".