19823189394173 has 4 divisors (see below), whose sum is σ = 21625297520928. Its totient is φ = 18021081267420.

The previous prime is 19823189394143. The next prime is 19823189394179. The reversal of 19823189394173 is 37149398132891.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19823189394173 - 2⁶ = 19823189394109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19823189394179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901054063361 + ... + 901054063382.

It is an arithmetic number, because the mean of its divisors is an integer number (5406324380232).

Almost surely, 2^{19823189394173} is an apocalyptic number.

It is an amenable number.

19823189394173 is a deficient number, since it is larger than the sum of its proper divisors (1802108126755).

19823189394173 is a wasteful number, since it uses less digits than its factorization.

19823189394173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802108126754.

The product of its digits is 70543872, while the sum is 68.

The spelling of 19823189394173 in words is "nineteen trillion, eight hundred twenty-three billion, one hundred eighty-nine million, three hundred ninety-four thousand, one hundred seventy-three".