1288883005 has 4 divisors (see below), whose sum is σ = 1546659612. Its totient is φ = 1031106400.

The previous prime is 1288883003. The next prime is 1288883023. The reversal of 1288883005 is 5003888821.

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

It can be written as a sum of positive squares in 2 ways, for example, as 921547449 + 367335556 = 30357^2 + 19166^2 .

It is not a de Polignac number, because 1288883005 - 2¹ = 1288883003 is a prime.

It is a super-2 number, since 2×1288883005² = 3322438801155660050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288883003) 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 3 ways as a sum of consecutive naturals, for example, 128888296 + ... + 128888305.

It is an arithmetic number, because the mean of its divisors is an integer number (386664903).

Almost surely, 2^1288883005 is an apocalyptic number.

It is an amenable number.

1288883005 is a deficient number, since it is larger than the sum of its proper divisors (257776607).

1288883005 is an equidigital number, since it uses as much as digits as its factorization.

1288883005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257776606.

The product of its (nonzero) digits is 122880, while the sum is 43.

The square root of 1288883005 is about 35901.0167683312. The cubic root of 1288883005 is about 1088.2729446614.

The spelling of 1288883005 in words is "one billion, two hundred eighty-eight million, eight hundred eighty-three thousand, five".