1271886885 has 48 divisors (see below), whose sum is σ = 2325360960. Its totient is φ = 641329920.

The previous prime is 1271886857. The next prime is 1271886893. The reversal of 1271886885 is 5886881721.

It is not a de Polignac number, because 1271886885 - 2⁵ = 1271886853 is a prime.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 526330 + ... + 528740.

It is an arithmetic number, because the mean of its divisors is an integer number (48445020).

Almost surely, 2^1271886885 is an apocalyptic number.

1271886885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1271886885 is a deficient number, since it is larger than the sum of its proper divisors (1053474075).

1271886885 is a wasteful number, since it uses less digits than its factorization.

1271886885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058 (or 3055 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 54.

The square root of 1271886885 is about 35663.5231714423. The cubic root of 1271886885 is about 1083.4681846071.

The spelling of 1271886885 in words is "one billion, two hundred seventy-one million, eight hundred eighty-six thousand, eight hundred eighty-five".