2155926943 has 2 divisors, whose sum is σ = 2155926944. Its totient is φ = 2155926942.

The previous prime is 2155926923. The next prime is 2155927001. The reversal of 2155926943 is 3496295512.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2155926943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2155926893 and 2155926902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155926923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077963471 + 1077963472.

It is an arithmetic number, because the mean of its divisors is an integer number (1077963472).

Almost surely, 2^2155926943 is an apocalyptic number.

2155926943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155926943 is an equidigital number, since it uses as much as digits as its factorization.

2155926943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 583200, while the sum is 46.

The square root of 2155926943 is about 46431.9603613718. The cubic root of 2155926943 is about 1291.8477902447.

The spelling of 2155926943 in words is "two billion, one hundred fifty-five million, nine hundred twenty-six thousand, nine hundred forty-three".