1288052817 has 4 divisors (see below), whose sum is σ = 1717403760. Its totient is φ = 858701876.

The previous prime is 1288052749. The next prime is 1288052827. The reversal of 1288052817 is 7182508821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1288052817 - 2⁸ = 1288052561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1288052827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214675467 + ... + 214675472.

It is an arithmetic number, because the mean of its divisors is an integer number (429350940).

Almost surely, 2^1288052817 is an apocalyptic number.

It is an amenable number.

1288052817 is a deficient number, since it is larger than the sum of its proper divisors (429350943).

1288052817 is an equidigital number, since it uses as much as digits as its factorization.

1288052817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429350942.

The product of its (nonzero) digits is 71680, while the sum is 42.

The square root of 1288052817 is about 35889.4527263930. The cubic root of 1288052817 is about 1088.0392370802.

The spelling of 1288052817 in words is "one billion, two hundred eighty-eight million, fifty-two thousand, eight hundred seventeen".