19836309538068 has 24 divisors (see below), whose sum is σ = 46294059639072. Its totient is φ = 6610769267424.

The previous prime is 19836309538057. The next prime is 19836309538069. The reversal of 19836309538068 is 86083590363891.

It is a junction number, because it is equal to n+sod(n) for n = 19836309537993 and 19836309538011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19836309538069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166677030 + ... + 166795997.

It is an arithmetic number, because the mean of its divisors is an integer number (1928919151628).

Almost surely, 2^{19836309538068} is an apocalyptic number.

It is an amenable number.

19836309538068 is an abundant number, since it is smaller than the sum of its proper divisors (26457750101004).

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

19836309538068 is a wasteful number, since it uses less digits than its factorization.

19836309538068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333477991 (or 333477989 counting only the distinct ones).

The product of its (nonzero) digits is 201553920, while the sum is 69.

The spelling of 19836309538068 in words is "nineteen trillion, eight hundred thirty-six billion, three hundred nine million, five hundred thirty-eight thousand, sixty-eight".