19145723133 has 16 divisors (see below), whose sum is σ = 25874932160. Its totient is φ = 12591023616.

The previous prime is 19145723111. The next prime is 19145723143. The reversal of 19145723133 is 33132754191.

It is not a de Polignac number, because 19145723133 - 2⁸ = 19145722877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19145723091 and 19145723100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19145723143) 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 15 ways as a sum of consecutive naturals, for example, 17818 + ... + 196491.

It is an arithmetic number, because the mean of its divisors is an integer number (1617183260).

Almost surely, 2^19145723133 is an apocalyptic number.

It is an amenable number.

19145723133 is a deficient number, since it is larger than the sum of its proper divisors (6729209027).

19145723133 is a wasteful number, since it uses less digits than its factorization.

19145723133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214716.

The product of its digits is 68040, while the sum is 39.

The spelling of 19145723133 in words is "nineteen billion, one hundred forty-five million, seven hundred twenty-three thousand, one hundred thirty-three".