19142947172 has 12 divisors (see below), whose sum is σ = 35470755180. Its totient is φ = 9008445696.

The previous prime is 19142947157. The next prime is 19142947207. The reversal of 19142947172 is 27174924191.

It can be written as a sum of positive squares in 2 ways, for example, as 5796690496 + 13346256676 = 76136^2 + 115526^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140756897 + ... + 140757032.

It is an arithmetic number, because the mean of its divisors is an integer number (2955896265).

Almost surely, 2^19142947172 is an apocalyptic number.

It is an amenable number.

19142947172 is a deficient number, since it is larger than the sum of its proper divisors (16327808008).

19142947172 is a wasteful number, since it uses less digits than its factorization.

19142947172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281513950 (or 281513948 counting only the distinct ones).

The product of its digits is 254016, while the sum is 47.

The spelling of 19142947172 in words is "nineteen billion, one hundred forty-two million, nine hundred forty-seven thousand, one hundred seventy-two".