1288052539 has 2 divisors, whose sum is σ = 1288052540. Its totient is φ = 1288052538.

The previous prime is 1288052537. The next prime is 1288052543. The reversal of 1288052539 is 9352508821.

It is a weak prime.

It is an emirp because it is prime and its reverse (9352508821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1288052539 - 2¹ = 1288052537 is a prime.

Together with 1288052537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1288052495 and 1288052504.

It is not a weakly prime, because it can be changed into another prime (1288052533) 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, 644026269 + 644026270.

It is an arithmetic number, because the mean of its divisors is an integer number (644026270).

Almost surely, 2^1288052539 is an apocalyptic number.

1288052539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288052539 is an equidigital number, since it uses as much as digits as its factorization.

1288052539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 1288052539 is about 35889.4488533887. The cubic root of 1288052539 is about 1088.0391588032.

The spelling of 1288052539 in words is "one billion, two hundred eighty-eight million, fifty-two thousand, five hundred thirty-nine".