19172039041 has 8 divisors (see below), whose sum is σ = 19419137640. Its totient is φ = 18925644672.

The previous prime is 19172039027. The next prime is 19172039071. The reversal of 19172039041 is 14093027191.

It can be written as a sum of positive squares in 4 ways, for example, as 2270999025 + 16901040016 = 47655^2 + 130004^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19172039041 - 2¹⁹ = 19171514753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19172039071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121150 + ... + 230263.

It is an arithmetic number, because the mean of its divisors is an integer number (2427392205).

Almost surely, 2^19172039041 is an apocalyptic number.

It is an amenable number.

19172039041 is a deficient number, since it is larger than the sum of its proper divisors (247098599).

19172039041 is an equidigital number, since it uses as much as digits as its factorization.

19172039041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352115.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 19172039041 in words is "nineteen billion, one hundred seventy-two million, thirty-nine thousand, forty-one".