1808480021141 has 4 divisors (see below), whose sum is σ = 1810661541900. Its totient is φ = 1806298500384.

The previous prime is 1808480021123. The next prime is 1808480021147. The reversal of 1808480021141 is 1411200848081.

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 1170951231025 + 637528790116 = 1082105^2 + 798454^2 .

It is a cyclic number.

It is not a de Polignac number, because 1808480021141 - 2⁶ = 1808480021077 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1808480021095 and 1808480021104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1808480021147) 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, 1090759136 + ... + 1090760793.

It is an arithmetic number, because the mean of its divisors is an integer number (452665385475).

Almost surely, 2^{1808480021141} is an apocalyptic number.

It is an amenable number.

1808480021141 is a deficient number, since it is larger than the sum of its proper divisors (2181520759).

1808480021141 is an equidigital number, since it uses as much as digits as its factorization.

1808480021141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181520758.

The product of its (nonzero) digits is 16384, while the sum is 38.

The spelling of 1808480021141 in words is "one trillion, eight hundred eight billion, four hundred eighty million, twenty-one thousand, one hundred forty-one".