1284227775 has 18 divisors (see below), whose sum is σ = 2300195040. Its totient is φ = 684921360.

The previous prime is 1284227773. The next prime is 1284227797. The reversal of 1284227775 is 5777224821.

It is not a de Polignac number, because 1284227775 - 2¹ = 1284227773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 1284227775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1284227771) 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 in 17 ways as a sum of consecutive naturals, for example, 2853615 + ... + 2854064.

Almost surely, 2^1284227775 is an apocalyptic number.

1284227775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1284227775 is a deficient number, since it is larger than the sum of its proper divisors (1015967265).

1284227775 is a wasteful number, since it uses less digits than its factorization.

1284227775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5707695 (or 5707687 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 1284227775 is about 35836.1238835899. The cubic root of 1284227775 is about 1086.9611440598.

The spelling of 1284227775 in words is "one billion, two hundred eighty-four million, two hundred twenty-seven thousand, seven hundred seventy-five".