1288278283 has 4 divisors (see below), whose sum is σ = 1288710568. Its totient is φ = 1287846000.

The previous prime is 1288278269. The next prime is 1288278301. The reversal of 1288278283 is 3828728821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1288278283 - 2²¹ = 1286181131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288272283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211641 + ... + 217642.

It is an arithmetic number, because the mean of its divisors is an integer number (322177642).

Almost surely, 2^1288278283 is an apocalyptic number.

1288278283 is a deficient number, since it is larger than the sum of its proper divisors (432285).

1288278283 is an equidigital number, since it uses as much as digits as its factorization.

1288278283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432284.

The product of its digits is 688128, while the sum is 49.

The square root of 1288278283 is about 35892.5937067802. The cubic root of 1288278283 is about 1088.1027183130.

The spelling of 1288278283 in words is "one billion, two hundred eighty-eight million, two hundred seventy-eight thousand, two hundred eighty-three".