871191513 has 12 divisors (see below), whose sum is σ = 1276112448. Its totient is φ = 572613720.

The previous prime is 871191511. The next prime is 871191521. The reversal of 871191513 is 315191178.

It is not a de Polignac number, because 871191513 - 2¹ = 871191511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (871191511) 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 11 ways as a sum of consecutive naturals, for example, 681045 + ... + 682322.

It is an arithmetic number, because the mean of its divisors is an integer number (106342704).

Almost surely, 2^871191513 is an apocalyptic number.

It is an amenable number.

871191513 is a deficient number, since it is larger than the sum of its proper divisors (404920935).

871191513 is a wasteful number, since it uses less digits than its factorization.

871191513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363444 (or 1363441 counting only the distinct ones).

The product of its digits is 7560, while the sum is 36.

The square root of 871191513 is about 29515.9535336401. The cubic root of 871191513 is about 955.0758829719.

The spelling of 871191513 in words is "eight hundred seventy-one million, one hundred ninety-one thousand, five hundred thirteen".