1288103855 has 16 divisors (see below), whose sum is σ = 1671477120. Its totient is φ = 949228032.

The previous prime is 1288103849. The next prime is 1288103857. The reversal of 1288103855 is 5583018821.

It is a cyclic number.

It is not a de Polignac number, because 1288103855 - 2²⁰ = 1287055279 is a prime.

It is a super-2 number, since 2×1288103855² = 3318423082531722050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288103857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157220 + ... + 165209.

It is an arithmetic number, because the mean of its divisors is an integer number (104467320).

Almost surely, 2^1288103855 is an apocalyptic number.

1288103855 is a deficient number, since it is larger than the sum of its proper divisors (383373265).

1288103855 is a wasteful number, since it uses less digits than its factorization.

1288103855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322498.

The product of its (nonzero) digits is 76800, while the sum is 41.

The square root of 1288103855 is about 35890.1637639061. The cubic root of 1288103855 is about 1088.0536077676.

The spelling of 1288103855 in words is "one billion, two hundred eighty-eight million, one hundred three thousand, eight hundred fifty-five".