19838868212 has 12 divisors (see below), whose sum is σ = 34728921696. Its totient is φ = 9916319160.

The previous prime is 19838868211. The next prime is 19838868227. The reversal of 19838868212 is 21286883891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19838868211) 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, 764378 + ... + 789905.

It is an arithmetic number, because the mean of its divisors is an integer number (2894076808).

Almost surely, 2^19838868212 is an apocalyptic number.

It is an amenable number.

19838868212 is a deficient number, since it is larger than the sum of its proper divisors (14890053484).

19838868212 is a wasteful number, since it uses less digits than its factorization.

19838868212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1557478 (or 1557476 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 56.

The spelling of 19838868212 in words is "nineteen billion, eight hundred thirty-eight million, eight hundred sixty-eight thousand, two hundred twelve".