2144135309 has 2 divisors, whose sum is σ = 2144135310. Its totient is φ = 2144135308.

The previous prime is 2144135269. The next prime is 2144135317. The reversal of 2144135309 is 9035314412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1127482084 + 1016653225 = 33578^2 + 31885^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144135309 - 2⁸ = 2144135053 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2144135209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072067654 + 1072067655.

It is an arithmetic number, because the mean of its divisors is an integer number (1072067655).

Almost surely, 2^2144135309 is an apocalyptic number.

It is an amenable number.

2144135309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2144135309 is an equidigital number, since it uses as much as digits as its factorization.

2144135309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 2144135309 is about 46304.8087027687. The cubic root of 2144135309 is about 1289.4882710796.

The spelling of 2144135309 in words is "two billion, one hundred forty-four million, one hundred thirty-five thousand, three hundred nine".