1808227419709 has 4 divisors (see below), whose sum is σ = 1808329120416. Its totient is φ = 1808125719004.

The previous prime is 1808227419703. The next prime is 1808227419721. The reversal of 1808227419709 is 9079147228081.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1808227419709 - 2³ = 1808227419701 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808227419701) 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 3 ways as a sum of consecutive naturals, for example, 50823679 + ... + 50859244.

It is an arithmetic number, because the mean of its divisors is an integer number (452082280104).

Almost surely, 2^{1808227419709} is an apocalyptic number.

It is an amenable number.

1808227419709 is a deficient number, since it is larger than the sum of its proper divisors (101700707).

1808227419709 is a wasteful number, since it uses less digits than its factorization.

1808227419709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101700706.

The product of its (nonzero) digits is 4064256, while the sum is 58.

The spelling of 1808227419709 in words is "one trillion, eight hundred eight billion, two hundred twenty-seven million, four hundred nineteen thousand, seven hundred nine".