19434358585 has 4 divisors (see below), whose sum is σ = 23321230308. Its totient is φ = 15547486864.

The previous prime is 19434358549. The next prime is 19434358597. The reversal of 19434358585 is 58585343491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10130019904 + 9304338681 = 100648^2 + 96459^2 .

It is a cyclic number.

It is not a de Polignac number, because 19434358585 - 2²³ = 19425969977 is a prime.

It is a super-2 number, since 2×19434358585² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1943435854 + ... + 1943435863.

It is an arithmetic number, because the mean of its divisors is an integer number (5830307577).

Almost surely, 2^19434358585 is an apocalyptic number.

It is an amenable number.

19434358585 is a deficient number, since it is larger than the sum of its proper divisors (3886871723).

19434358585 is an equidigital number, since it uses as much as digits as its factorization.

19434358585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886871722.

The product of its digits is 10368000, while the sum is 55.

The spelling of 19434358585 in words is "nineteen billion, four hundred thirty-four million, three hundred fifty-eight thousand, five hundred eighty-five".