18219840183 has 12 divisors (see below), whose sum is σ = 27702681240. Its totient is φ = 11507267376.

The previous prime is 18219840167. The next prime is 18219840229. The reversal of 18219840183 is 38104891281.

18219840183 is a `hidden beast` number, since 1 + 82 + 1 + 98 + 401 + 83 = 666.

It is not a de Polignac number, because 18219840183 - 2⁴ = 18219840167 is a prime.

It is a super-3 number, since 3×18219840183³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18219841183) 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, 53274216 + ... + 53274557.

It is an arithmetic number, because the mean of its divisors is an integer number (2308556770).

Almost surely, 2^18219840183 is an apocalyptic number.

18219840183 is a deficient number, since it is larger than the sum of its proper divisors (9482841057).

18219840183 is a wasteful number, since it uses less digits than its factorization.

18219840183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106548798 (or 106548795 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 18219840183 in words is "eighteen billion, two hundred nineteen million, eight hundred forty thousand, one hundred eighty-three".