1288790611 has 2 divisors, whose sum is σ = 1288790612. Its totient is φ = 1288790610.

The previous prime is 1288790609. The next prime is 1288790669. The reversal of 1288790611 is 1160978821.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1160978821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1288790611 - 2¹ = 1288790609 is a prime.

Together with 1288790609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1288790681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644395305 + 644395306.

It is an arithmetic number, because the mean of its divisors is an integer number (644395306).

Almost surely, 2^1288790611 is an apocalyptic number.

1288790611 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288790611 is an equidigital number, since it uses as much as digits as its factorization.

1288790611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 1288790611 is about 35899.7299572016. The cubic root of 1288790611 is about 1088.2469396392.

The spelling of 1288790611 in words is "one billion, two hundred eighty-eight million, seven hundred ninety thousand, six hundred eleven".