19945683036 has 36 divisors (see below), whose sum is σ = 50521826992. Its totient is φ = 6634903104.

The previous prime is 19945683031. The next prime is 19945683049. The reversal of 19945683036 is 63038654991.

19945683036 is a `hidden beast` number, since 19 + 9 + 4 + 568 + 30 + 36 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19945683031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551305 + ... + 586368.

Almost surely, 2^19945683036 is an apocalyptic number.

It is an amenable number.

19945683036 is an abundant number, since it is smaller than the sum of its proper divisors (30576143956).

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

19945683036 is a wasteful number, since it uses less digits than its factorization.

19945683036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1138170 (or 1138165 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 54.

The spelling of 19945683036 in words is "nineteen billion, nine hundred forty-five million, six hundred eighty-three thousand, thirty-six".