1288068361 has 2 divisors, whose sum is σ = 1288068362. Its totient is φ = 1288068360.

The previous prime is 1288068337. The next prime is 1288068391. The reversal of 1288068361 is 1638608821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 933913600 + 354154761 = 30560^2 + 18819^2 .

It is a cyclic number.

It is not a de Polignac number, because 1288068361 - 2⁵ = 1288068329 is a prime.

It is a super-3 number, since 3×1288068361³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1288068391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644034180 + 644034181.

It is an arithmetic number, because the mean of its divisors is an integer number (644034181).

Almost surely, 2^1288068361 is an apocalyptic number.

It is an amenable number.

1288068361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1288068361 is an equidigital number, since it uses as much as digits as its factorization.

1288068361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1288068361 is about 35889.6692796130. The cubic root of 1288068361 is about 1088.0436138194.

The spelling of 1288068361 in words is "one billion, two hundred eighty-eight million, sixty-eight thousand, three hundred sixty-one".