861874487192 has 16 divisors (see below), whose sum is σ = 1616030678400. Its totient is φ = 430932972960.

The previous prime is 861874487161. The next prime is 861874487207. The reversal of 861874487192 is 291784478168.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 425234 + ... + 1380062.

It is an arithmetic number, because the mean of its divisors is an integer number (101001917400).

Almost surely, 2^861874487192 is an apocalyptic number.

It is an amenable number.

861874487192 is a deficient number, since it is larger than the sum of its proper divisors (754156191208).

861874487192 is a wasteful number, since it uses less digits than its factorization.

861874487192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1067666 (or 1067662 counting only the distinct ones).

The product of its digits is 43352064, while the sum is 65.

The spelling of 861874487192 in words is "eight hundred sixty-one billion, eight hundred seventy-four million, four hundred eighty-seven thousand, one hundred ninety-two".