871421518 has 16 divisors (see below), whose sum is σ = 1426422960. Its totient is φ = 395972800.

The previous prime is 871421483. The next prime is 871421527. The reversal of 871421518 is 815124178.

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 7 ways as a sum of consecutive naturals, for example, 111978 + ... + 119506.

It is an arithmetic number, because the mean of its divisors is an integer number (89151435).

Almost surely, 2^871421518 is an apocalyptic number.

871421518 is a deficient number, since it is larger than the sum of its proper divisors (555001442).

871421518 is a wasteful number, since it uses less digits than its factorization.

871421518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12803.

The product of its digits is 17920, while the sum is 37.

The square root of 871421518 is about 29519.8495592373. The cubic root of 871421518 is about 955.1599260692.

The spelling of 871421518 in words is "eight hundred seventy-one million, four hundred twenty-one thousand, five hundred eighteen".