19928545158 has 16 divisors (see below), whose sum is σ = 40609111536. Its totient is φ = 6517511520.

The previous prime is 19928545151. The next prime is 19928545183. The reversal of 19928545158 is 85154582991.

It is a super-2 number, since 2×19928545158² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19928545098 and 19928545107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928545151) 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 7 ways as a sum of consecutive naturals, for example, 31333873 + ... + 31334508.

It is an arithmetic number, because the mean of its divisors is an integer number (2538069471).

Almost surely, 2^19928545158 is an apocalyptic number.

19928545158 is an abundant number, since it is smaller than the sum of its proper divisors (20680566378).

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

19928545158 is a wasteful number, since it uses less digits than its factorization.

19928545158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62668439.

The product of its digits is 5184000, while the sum is 57.

The spelling of 19928545158 in words is "nineteen billion, nine hundred twenty-eight million, five hundred forty-five thousand, one hundred fifty-eight".