2143900709 has 2 divisors, whose sum is σ = 2143900710. Its totient is φ = 2143900708.

The previous prime is 2143900691. The next prime is 2143900727. The reversal of 2143900709 is 9070093412.

It is a balanced prime because it is at equal distance from previous prime (2143900691) and next prime (2143900727).

It can be written as a sum of positive squares in only one way, i.e., 1956292900 + 187607809 = 44230^2 + 13697^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143900709 - 2⁸ = 2143900453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2143900729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1071950354 + 1071950355.

It is an arithmetic number, because the mean of its divisors is an integer number (1071950355).

Almost surely, 2^2143900709 is an apocalyptic number.

It is an amenable number.

2143900709 is a deficient number, since it is larger than the sum of its proper divisors (1).

2143900709 is an equidigital number, since it uses as much as digits as its factorization.

2143900709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 2143900709 is about 46302.2754192491. The cubic root of 2143900709 is about 1289.4412396911.

The spelling of 2143900709 in words is "two billion, one hundred forty-three million, nine hundred thousand, seven hundred nine".