1283972871 has 8 divisors (see below), whose sum is σ = 1712222704. Its totient is φ = 855852480.

The previous prime is 1283972867. The next prime is 1283972873. The reversal of 1283972871 is 1782793821.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1283972871 - 2² = 1283972867 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1283972871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283972873) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6190 + ... + 51051.

It is an arithmetic number, because the mean of its divisors is an integer number (214027838).

Almost surely, 2^1283972871 is an apocalyptic number.

1283972871 is a deficient number, since it is larger than the sum of its proper divisors (428249833).

1283972871 is an equidigital number, since it uses as much as digits as its factorization.

1283972871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64721.

The product of its digits is 338688, while the sum is 48.

The square root of 1283972871 is about 35832.5671840576. The cubic root of 1283972871 is about 1086.8892229975.

The spelling of 1283972871 in words is "one billion, two hundred eighty-three million, nine hundred seventy-two thousand, eight hundred seventy-one".