1916135546871 has 144 divisors (see below), whose sum is σ = 3438157737600. Its totient is φ = 943206840576.

The previous prime is 1916135546867. The next prime is 1916135546873. The reversal of 1916135546871 is 1786455316191.

It is not a de Polignac number, because 1916135546871 - 2² = 1916135546867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916135546873) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 31594845 + ... + 31655433.

It is an arithmetic number, because the mean of its divisors is an integer number (23876095400).

Almost surely, 2^{1916135546871} is an apocalyptic number.

1916135546871 is a deficient number, since it is larger than the sum of its proper divisors (1522022190729).

1916135546871 is a wasteful number, since it uses less digits than its factorization.

1916135546871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60718 (or 60698 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 57.

The spelling of 1916135546871 in words is "one trillion, nine hundred sixteen billion, one hundred thirty-five million, five hundred forty-six thousand, eight hundred seventy-one".