4518051840 has 228 divisors, whose sum is σ = 15703444224. Its totient is φ = 1201668096.

The previous prime is 4518051809. The next prime is 4518051847. The reversal of 4518051840 is 481508154.

4518051840 is a `hidden beast` number, since 451 + 80 + 51 + 84 + 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 = 4518051795 and 4518051804.

It is not an unprimeable number, because it can be changed into a prime (4518051847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11796289 + ... + 11796671.

Almost surely, 2^4518051840 is an apocalyptic number.

4518051840 is a gapful number since it is divisible by the number (40) 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 4518051840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7851722112).

4518051840 is an abundant number, since it is smaller than the sum of its proper divisors (11185392384).

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

4518051840 is an frugal number, since it uses more digits than its factorization.

4518051840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 393 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The square root of 4518051840 is about 67216.4551281902. The cubic root of 4518051840 is about 1653.1683035649.

Adding to 4518051840 its reverse (481508154), we get a palindrome (4999559994).

It can be divided in two parts, 45180 and 51840, that added together give a triangular number (97020 = T₄₄₀).

The spelling of 4518051840 in words is "four billion, five hundred eighteen million, fifty-one thousand, eight hundred forty".