1288244163 has 4 divisors (see below), whose sum is σ = 1717658888. Its totient is φ = 858829440.

The previous prime is 1288244161. The next prime is 1288244203. The reversal of 1288244163 is 3614428821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3614428821 = 3 ⋅1204809607.

It is not a de Polignac number, because 1288244163 - 2¹ = 1288244161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1288244161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214707358 + ... + 214707363.

It is an arithmetic number, because the mean of its divisors is an integer number (429414722).

Almost surely, 2^1288244163 is an apocalyptic number.

1288244163 is a deficient number, since it is larger than the sum of its proper divisors (429414725).

1288244163 is an equidigital number, since it uses as much as digits as its factorization.

1288244163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429414724.

The product of its digits is 73728, while the sum is 39.

The square root of 1288244163 is about 35892.1183966620. The cubic root of 1288244163 is about 1088.0931121089.

The spelling of 1288244163 in words is "one billion, two hundred eighty-eight million, two hundred forty-four thousand, one hundred sixty-three".