18605477240 has 32 divisors (see below), whose sum is σ = 47842656480. Its totient is φ = 6379020672.

The previous prime is 18605477213. The next prime is 18605477257. The reversal of 18605477240 is 4277450681.

It is a junction number, because it is equal to n+sod(n) for n = 18605477191 and 18605477200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33223787 + ... + 33224346.

It is an arithmetic number, because the mean of its divisors is an integer number (1495083015).

Almost surely, 2^18605477240 is an apocalyptic number.

18605477240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18605477240 is an abundant number, since it is smaller than the sum of its proper divisors (29237179240).

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

18605477240 is a wasteful number, since it uses less digits than its factorization.

18605477240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66448151 (or 66448147 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 18605477240 in words is "eighteen billion, six hundred five million, four hundred seventy-seven thousand, two hundred forty".