1871123459916 has 48 divisors (see below), whose sum is σ = 4380235364736. Its totient is φ = 621669128064.

The previous prime is 1871123459839. The next prime is 1871123459921. The reversal of 1871123459916 is 6199543211781.

It is a super-2 number, since 2×1871123459916² (a number of 25 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 10811335 + ... + 10983041.

It is an arithmetic number, because the mean of its divisors is an integer number (91254903432).

Almost surely, 2^{1871123459916} is an apocalyptic number.

It is an amenable number.

1871123459916 is an abundant number, since it is smaller than the sum of its proper divisors (2509111904820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1871123459916 is a wasteful number, since it uses less digits than its factorization.

1871123459916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174678 (or 174676 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 57.

The spelling of 1871123459916 in words is "one trillion, eight hundred seventy-one billion, one hundred twenty-three million, four hundred fifty-nine thousand, nine hundred sixteen".