19109801142 has 48 divisors (see below), whose sum is σ = 41707926000. Its totient is φ = 6323429376.

The previous prime is 19109801129. The next prime is 19109801147. The reversal of 19109801142 is 24110890191.

It is a super-3 number, since 3×19109801142³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19109801097 and 19109801106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19109801147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1435734 + ... + 1448982.

It is an arithmetic number, because the mean of its divisors is an integer number (868915125).

Almost surely, 2^19109801142 is an apocalyptic number.

19109801142 is an abundant number, since it is smaller than the sum of its proper divisors (22598124858).

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

19109801142 is a wasteful number, since it uses less digits than its factorization.

19109801142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13837 (or 13834 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 19109801142 in words is "nineteen billion, one hundred nine million, eight hundred one thousand, one hundred forty-two".