1288612679 has 2 divisors, whose sum is σ = 1288612680. Its totient is φ = 1288612678.

The previous prime is 1288612673. The next prime is 1288612693. The reversal of 1288612679 is 9762168821.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288612679 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288612673) 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, 644306339 + 644306340.

It is an arithmetic number, because the mean of its divisors is an integer number (644306340).

Almost surely, 2^1288612679 is an apocalyptic number.

1288612679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288612679 is an equidigital number, since it uses as much as digits as its factorization.

1288612679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 50.

The square root of 1288612679 is about 35897.2516914596. The cubic root of 1288612679 is about 1088.1968557687.

The spelling of 1288612679 in words is "one billion, two hundred eighty-eight million, six hundred twelve thousand, six hundred seventy-nine".