2161846943 has 2 divisors, whose sum is σ = 2161846944. Its totient is φ = 2161846942.

The previous prime is 2161846937. The next prime is 2161846993. The reversal of 2161846943 is 3496481612.

2161846943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2161846943 - 2⁴ = 2161846927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2161846894 and 2161846903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161846913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080923471 + 1080923472.

It is an arithmetic number, because the mean of its divisors is an integer number (1080923472).

Almost surely, 2^2161846943 is an apocalyptic number.

2161846943 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161846943 is an equidigital number, since it uses as much as digits as its factorization.

2161846943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 44.

The square root of 2161846943 is about 46495.6658517759. The cubic root of 2161846943 is about 1293.0291459147.

The spelling of 2161846943 in words is "two billion, one hundred sixty-one million, eight hundred forty-six thousand, nine hundred forty-three".