2143241851 has 2 divisors, whose sum is σ = 2143241852. Its totient is φ = 2143241850.

The previous prime is 2143241803. The next prime is 2143241887. The reversal of 2143241851 is 1581423412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2143241851 - 2¹¹ = 2143239803 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143241651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071620925 + 1071620926.

It is an arithmetic number, because the mean of its divisors is an integer number (1071620926).

Almost surely, 2^2143241851 is an apocalyptic number.

2143241851 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143241851 is an equidigital number, since it uses as much as digits as its factorization.

2143241851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The square root of 2143241851 is about 46295.1601250066. The cubic root of 2143241851 is about 1289.3091369129.

The spelling of 2143241851 in words is "two billion, one hundred forty-three million, two hundred forty-one thousand, eight hundred fifty-one".