2161383143 has 2 divisors, whose sum is σ = 2161383144. Its totient is φ = 2161383142.

The previous prime is 2161383139. The next prime is 2161383149. The reversal of 2161383143 is 3413831612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2161383143 - 2² = 2161383139 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161383149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080691571 + 1080691572.

It is an arithmetic number, because the mean of its divisors is an integer number (1080691572).

Almost surely, 2^2161383143 is an apocalyptic number.

2161383143 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161383143 is an equidigital number, since it uses as much as digits as its factorization.

2161383143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 2161383143 is about 46490.6780225886. The cubic root of 2161383143 is about 1292.9366710038.

The spelling of 2161383143 in words is "two billion, one hundred sixty-one million, three hundred eighty-three thousand, one hundred forty-three".