19612499196 has 12 divisors (see below), whose sum is σ = 45762498152. Its totient is φ = 6537499728.

The previous prime is 19612499177. The next prime is 19612499227. The reversal of 19612499196 is 69199421691.

It is a tau number, because it is divible by the number of its divisors (12).

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, 817187455 + ... + 817187478.

Almost surely, 2^19612499196 is an apocalyptic number.

It is an amenable number.

19612499196 is an abundant number, since it is smaller than the sum of its proper divisors (26149998956).

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

19612499196 is a wasteful number, since it uses less digits than its factorization.

19612499196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634374940 (or 1634374938 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 57.

The spelling of 19612499196 in words is "nineteen billion, six hundred twelve million, four hundred ninety-nine thousand, one hundred ninety-six".