181600499140 has 12 divisors (see below), whose sum is σ = 381361048236. Its totient is φ = 72640199648.

The previous prime is 181600499131. The next prime is 181600499161. The reversal of 181600499140 is 41994006181.

181600499140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 142024967044 + 39575532096 = 376862^2 + 198936^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4540012459 + ... + 4540012498.

It is an arithmetic number, because the mean of its divisors is an integer number (31780087353).

Almost surely, 2^181600499140 is an apocalyptic number.

181600499140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

181600499140 is an abundant number, since it is smaller than the sum of its proper divisors (199760549096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

181600499140 is a wasteful number, since it uses less digits than its factorization.

181600499140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9080024966 (or 9080024964 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The spelling of 181600499140 in words is "one hundred eighty-one billion, six hundred million, four hundred ninety-nine thousand, one hundred forty".