19109139100 has 18 divisors (see below), whose sum is σ = 41466832064. Its totient is φ = 7643655600.

The previous prime is 19109139089. The next prime is 19109139107. The reversal of 19109139100 is 193190191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19109139107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95545596 + ... + 95545795.

Almost surely, 2^19109139100 is an apocalyptic number.

19109139100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19109139100 is an abundant number, since it is smaller than the sum of its proper divisors (22357692964).

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

19109139100 is a wasteful number, since it uses less digits than its factorization.

19109139100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191091405 (or 191091398 counting only the distinct ones).

The product of its (nonzero) digits is 2187, while the sum is 34.

The spelling of 19109139100 in words is "nineteen billion, one hundred nine million, one hundred thirty-nine thousand, one hundred".