1288366061 has 2 divisors, whose sum is σ = 1288366062. Its totient is φ = 1288366060.

The previous prime is 1288366033. The next prime is 1288366069. The reversal of 1288366061 is 1606638821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1281210436 + 7155625 = 35794^2 + 2675^2 .

It is an emirp because it is prime and its reverse (1606638821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1288366061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1288366069) 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, 644183030 + 644183031.

It is an arithmetic number, because the mean of its divisors is an integer number (644183031).

Almost surely, 2^1288366061 is an apocalyptic number.

It is an amenable number.

1288366061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288366061 is an equidigital number, since it uses as much as digits as its factorization.

1288366061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 1288366061 is about 35893.8164730361. The cubic root of 1288366061 is about 1088.1274307044.

The spelling of 1288366061 in words is "one billion, two hundred eighty-eight million, three hundred sixty-six thousand, sixty-one".