19228636612 has 12 divisors (see below), whose sum is σ = 33714705276. Its totient is φ = 9595863680.

The previous prime is 19228636589. The next prime is 19228636619. The reversal of 19228636612 is 21663682291.

It can be written as a sum of positive squares in 2 ways, for example, as 1694639556 + 17533997056 = 41166^2 + 132416^2 .

It is not an unprimeable number, because it can be changed into a prime (19228636619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4611313 + ... + 4615480.

It is an arithmetic number, because the mean of its divisors is an integer number (2809558773).

Almost surely, 2^19228636612 is an apocalyptic number.

It is an amenable number.

19228636612 is a deficient number, since it is larger than the sum of its proper divisors (14486068664).

19228636612 is a wasteful number, since it uses less digits than its factorization.

19228636612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9227318 (or 9227316 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The spelling of 19228636612 in words is "nineteen billion, two hundred twenty-eight million, six hundred thirty-six thousand, six hundred twelve".