1288473885 has 40 divisors (see below), whose sum is σ = 2431286880. Its totient is φ = 651014496.

The previous prime is 1288473883. The next prime is 1288473899. The reversal of 1288473885 is 5883748821.

1288473885 is a `hidden beast` number, since 12 + 88 + 473 + 8 + 85 = 666.

It is not a de Polignac number, because 1288473885 - 2¹ = 1288473883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288473883) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76027 + ... + 91416.

It is an arithmetic number, because the mean of its divisors is an integer number (60782172).

Almost surely, 2^1288473885 is an apocalyptic number.

1288473885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1288473885 is a deficient number, since it is larger than the sum of its proper divisors (1142812995).

1288473885 is a wasteful number, since it uses less digits than its factorization.

1288473885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167479 (or 167470 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 54.

The square root of 1288473885 is about 35895.3184273381. The cubic root of 1288473885 is about 1088.1577851672.

The spelling of 1288473885 in words is "one billion, two hundred eighty-eight million, four hundred seventy-three thousand, eight hundred eighty-five".