18471839141 has 12 divisors (see below), whose sum is σ = 22751630028. Its totient is φ = 14901651072.

The previous prime is 18471839081. The next prime is 18471839173. The reversal of 18471839141 is 14193817481.

It can be written as a sum of positive squares in 2 ways, for example, as 16449088516 + 2022750625 = 128254^2 + 44975^2 .

It is not a de Polignac number, because 18471839141 - 2⁶ = 18471839077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18471838141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11086706 + ... + 11088371.

It is an arithmetic number, because the mean of its divisors is an integer number (1895969169).

Almost surely, 2^18471839141 is an apocalyptic number.

It is an amenable number.

18471839141 is a deficient number, since it is larger than the sum of its proper divisors (4279790887).

18471839141 is a wasteful number, since it uses less digits than its factorization.

18471839141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22175108 (or 22175101 counting only the distinct ones).

The product of its digits is 193536, while the sum is 47.

The spelling of 18471839141 in words is "eighteen billion, four hundred seventy-one million, eight hundred thirty-nine thousand, one hundred forty-one".