1808339214149 has 4 divisors (see below), whose sum is σ = 1947442230636. Its totient is φ = 1669236197664.

The previous prime is 1808339214137. The next prime is 1808339214173. The reversal of 1808339214149 is 9414129338081.

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 121504530625 + 1686834683524 = 348575^2 + 1298782^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808339214149 - 2²⁴ = 1808322436933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1808339214149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808339214349) 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, 69551508224 + ... + 69551508249.

It is an arithmetic number, because the mean of its divisors is an integer number (486860557659).

Almost surely, 2^{1808339214149} is an apocalyptic number.

It is an amenable number.

1808339214149 is a deficient number, since it is larger than the sum of its proper divisors (139103016487).

1808339214149 is a wasteful number, since it uses less digits than its factorization.

1808339214149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139103016486.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 1808339214149 in words is "one trillion, eight hundred eight billion, three hundred thirty-nine million, two hundred fourteen thousand, one hundred forty-nine".