1271841964 has 12 divisors (see below), whose sum is σ = 2232882288. Its totient is φ = 633875600.

The previous prime is 1271841947. The next prime is 1271841973. The reversal of 1271841964 is 4691481721.

It is a self number, because there is not a number n which added to its sum of digits gives 1271841964.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509947 + ... + 512434.

It is an arithmetic number, because the mean of its divisors is an integer number (186073524).

Almost surely, 2^1271841964 is an apocalyptic number.

It is an amenable number.

1271841964 is a deficient number, since it is larger than the sum of its proper divisors (961040324).

1271841964 is a wasteful number, since it uses less digits than its factorization.

1271841964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022696 (or 1022694 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 1271841964 is about 35662.8933767298. The cubic root of 1271841964 is about 1083.4554290055.

The spelling of 1271841964 in words is "one billion, two hundred seventy-one million, eight hundred forty-one thousand, nine hundred sixty-four".