1859041819009 has 4 divisors (see below), whose sum is σ = 1859430013780. Its totient is φ = 1858653624240.

The previous prime is 1859041818967. The next prime is 1859041819013. The reversal of 1859041819009 is 9009181409581.

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 354445194609 + 1504596624400 = 595353^2 + 1226620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1859041819009 - 2²⁷ = 1858907601281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1859041819069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194090202 + ... + 194099779.

It is an arithmetic number, because the mean of its divisors is an integer number (464857503445).

Almost surely, 2^{1859041819009} is an apocalyptic number.

It is an amenable number.

1859041819009 is a deficient number, since it is larger than the sum of its proper divisors (388194771).

1859041819009 is an equidigital number, since it uses as much as digits as its factorization.

1859041819009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388194770.

The product of its (nonzero) digits is 933120, while the sum is 55.

The spelling of 1859041819009 in words is "one trillion, eight hundred fifty-nine billion, forty-one million, eight hundred nineteen thousand, nine".