19084057085 has 8 divisors (see below), whose sum is σ = 22901900856. Its totient is φ = 15266557440.

The previous prime is 19084057073. The next prime is 19084057147. The reversal of 19084057085 is 58075048091.

It can be written as a sum of positive squares in 4 ways, for example, as 204747481 + 18879309604 = 14309^2 + 137402^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-19084057085 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57857 + ... + 203753.

It is an arithmetic number, because the mean of its divisors is an integer number (2862737607).

Almost surely, 2^19084057085 is an apocalyptic number.

It is an amenable number.

19084057085 is a deficient number, since it is larger than the sum of its proper divisors (3817843771).

19084057085 is a wasteful number, since it uses less digits than its factorization.

19084057085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172063.

The product of its (nonzero) digits is 403200, while the sum is 47.

The spelling of 19084057085 in words is "nineteen billion, eighty-four million, fifty-seven thousand, eighty-five".