19112182686 has 64 divisors (see below), whose sum is σ = 44270741760. Its totient is φ = 6105987360.

The previous prime is 19112182643. The next prime is 19112182699. The reversal of 19112182686 is 68628121191.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 62481 + ... + 205251.

It is an arithmetic number, because the mean of its divisors is an integer number (691730340).

Almost surely, 2^19112182686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19112182686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22135370880).

19112182686 is an abundant number, since it is smaller than the sum of its proper divisors (25158559074).

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

19112182686 is a wasteful number, since it uses less digits than its factorization.

19112182686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142886 (or 142880 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The spelling of 19112182686 in words is "nineteen billion, one hundred twelve million, one hundred eighty-two thousand, six hundred eighty-six".