19102109112 has 24 divisors (see below), whose sum is σ = 51734879040. Its totient is φ = 6367369680.

The previous prime is 19102109111. The next prime is 19102109123. The reversal of 19102109112 is 21190120191.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19102109111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 132653464 + ... + 132653607.

It is an arithmetic number, because the mean of its divisors is an integer number (2155619960).

Almost surely, 2^19102109112 is an apocalyptic number.

19102109112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19102109112 is an abundant number, since it is smaller than the sum of its proper divisors (32632769928).

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

19102109112 is a wasteful number, since it uses less digits than its factorization.

19102109112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265307083 (or 265307076 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 19102109112 in words is "nineteen billion, one hundred two million, one hundred nine thousand, one hundred twelve".