18422805240 has 320 divisors, whose sum is σ = 73052559360. Its totient is φ = 4074935040.

The previous prime is 18422805239. The next prime is 18422805253. The reversal of 18422805240 is 4250822481.

18422805240 is a `hidden beast` number, since 18 + 42 + 2 + 80 + 524 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 18422805195 and 18422805204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 689979 + ... + 716181.

It is an arithmetic number, because the mean of its divisors is an integer number (228289248).

Almost surely, 2^18422805240 is an apocalyptic number.

18422805240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18422805240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36526279680).

18422805240 is an abundant number, since it is smaller than the sum of its proper divisors (54629754120).

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

18422805240 is a wasteful number, since it uses less digits than its factorization.

18422805240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26264 (or 26251 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

It can be divided in two parts, 1842 and 2805240, that added together give a palindrome (2807082).

The spelling of 18422805240 in words is "eighteen billion, four hundred twenty-two million, eight hundred five thousand, two hundred forty".