1818365760 has 420 divisors, whose sum is σ = 6775187364. Its totient is φ = 462827520.

The previous prime is 1818365741. The next prime is 1818365761. The reversal of 1818365760 is 675638181.

It can be written as a sum of positive squares in 2 ways, for example, as 841928256 + 976437504 = 29016^2 + 31248^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818365761) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 24909084 + ... + 24909156.

Almost surely, 2^1818365760 is an apocalyptic number.

1818365760 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 1818365760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3387593682).

1818365760 is an abundant number, since it is smaller than the sum of its proper divisors (4956821604).

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

1818365760 is an equidigital number, since it uses as much as digits as its factorization.

1818365760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 114 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 1818365760 is about 42642.3001255795. The cubic root of 1818365760 is about 1220.5636023539.

The spelling of 1818365760 in words is "one billion, eight hundred eighteen million, three hundred sixty-five thousand, seven hundred sixty".