2143204187 has 2 divisors, whose sum is σ = 2143204188. Its totient is φ = 2143204186.

The previous prime is 2143204177. The next prime is 2143204201. The reversal of 2143204187 is 7814023412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2143204187 - 2¹² = 2143200091 is a prime.

It is not a weakly prime, because it can be changed into another prime (2143204177) 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, 1071602093 + 1071602094.

It is an arithmetic number, because the mean of its divisors is an integer number (1071602094).

Almost surely, 2^2143204187 is an apocalyptic number.

2143204187 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143204187 is an equidigital number, since it uses as much as digits as its factorization.

2143204187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 2143204187 is about 46294.7533420365. The cubic root of 2143204187 is about 1289.3015843629.

Adding to 2143204187 its reverse (7814023412), we get a palindrome (9957227599).

The spelling of 2143204187 in words is "two billion, one hundred forty-three million, two hundred four thousand, one hundred eighty-seven".