16239283309 has 2 divisors, whose sum is σ = 16239283310. Its totient is φ = 16239283308.

The previous prime is 16239283279. The next prime is 16239283343. The reversal of 16239283309 is 90338293261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12690698409 + 3548584900 = 112653^2 + 59570^2 .

It is an emirp because it is prime and its reverse (90338293261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16239283309 - 2³¹ = 14091799661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16239283399) 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, 8119641654 + 8119641655.

It is an arithmetic number, because the mean of its divisors is an integer number (8119641655).

Almost surely, 2^16239283309 is an apocalyptic number.

It is an amenable number.

16239283309 is a deficient number, since it is larger than the sum of its proper divisors (1).

16239283309 is an equidigital number, since it uses as much as digits as its factorization.

16239283309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 16239283309 in words is "sixteen billion, two hundred thirty-nine million, two hundred eighty-three thousand, three hundred nine".