19 IN COVID 19

The main idea of the author is to show through examples the principle that the author found in different fields of mathematics, probability, physics, and chemistry that the number 19 is a very deceiving number with similar numbers, such as 19 ± 1 or its palindromes 191, 1991 or numbers resembling or close to these numbers, as ±1, or ±2 with their properties different from even their twin primes, e.g., 193, or 189 that are equal 191 ± 2, or 192 that equals 191 + 1. The book also discusses the similar properties of numbers 11, 111, and 1111, if they are related in some way to number 19. Other numbers that sometimes are more leading than number 19 are also discussed, such as 360 or its multiples, Plato’s numbers 5040, 729 or their decomposition numbers, such as 144, 140, 14, 36, etc.