18650560340 has 24 divisors (see below), whose sum is σ = 39268454400. Its totient is φ = 7440742688.

The previous prime is 18650560339. The next prime is 18650560343. The reversal of 18650560340 is 4306505681.

It is a junction number, because it is equal to n+sod(n) for n = 18650560294 and 18650560303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18650560343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1209740 + ... + 1225059.

It is an arithmetic number, because the mean of its divisors is an integer number (1636185600).

Almost surely, 2^18650560340 is an apocalyptic number.

18650560340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18650560340 is an abundant number, since it is smaller than the sum of its proper divisors (20617894060).

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

18650560340 is a wasteful number, since it uses less digits than its factorization.

18650560340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435191 (or 2435189 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 18650560340 in words is "eighteen billion, six hundred fifty million, five hundred sixty thousand, three hundred forty".