19172419158 has 32 divisors (see below), whose sum is σ = 39707458560. Its totient is φ = 6164151840.

The previous prime is 19172419151. The next prime is 19172419193. The reversal of 19172419158 is 85191427191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19172419151) 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, 116841 + ... + 228027.

It is an arithmetic number, because the mean of its divisors is an integer number (1240858080).

Almost surely, 2^19172419158 is an apocalyptic number.

19172419158 is an abundant number, since it is smaller than the sum of its proper divisors (20535039402).

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

19172419158 is a wasteful number, since it uses less digits than its factorization.

19172419158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112212.

The product of its digits is 181440, while the sum is 48.

The spelling of 19172419158 in words is "nineteen billion, one hundred seventy-two million, four hundred nineteen thousand, one hundred fifty-eight".