19109801139 has 16 divisors (see below), whose sum is σ = 29934234624. Its totient is φ = 10690797600.

The previous prime is 19109801129. The next prime is 19109801147. The reversal of 19109801139 is 93110890191.

It is a happy number.

It is not a de Polignac number, because 19109801139 - 2²⁴ = 19093023923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19109801139.

It is not an unprimeable number, because it can be changed into a prime (19109801129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22272067 + ... + 22272924.

It is an arithmetic number, because the mean of its divisors is an integer number (1870889664).

Almost surely, 2^19109801139 is an apocalyptic number.

19109801139 is a deficient number, since it is larger than the sum of its proper divisors (10824433485).

19109801139 is a wasteful number, since it uses less digits than its factorization.

19109801139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44545018.

The product of its (nonzero) digits is 17496, while the sum is 42.

The spelling of 19109801139 in words is "nineteen billion, one hundred nine million, eight hundred one thousand, one hundred thirty-nine".