19619813212 has 12 divisors (see below), whose sum is σ = 36141761320. Its totient is φ = 9293595696.

The previous prime is 19619813209. The next prime is 19619813243. The reversal of 19619813212 is 21231891691.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129077643 + ... + 129077794.

Almost surely, 2^19619813212 is an apocalyptic number.

It is an amenable number.

19619813212 is a deficient number, since it is larger than the sum of its proper divisors (16521948108).

19619813212 is a wasteful number, since it uses less digits than its factorization.

19619813212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258155460 (or 258155458 counting only the distinct ones).

The product of its digits is 46656, while the sum is 43.

The spelling of 19619813212 in words is "nineteen billion, six hundred nineteen million, eight hundred thirteen thousand, two hundred twelve".