2018241840 has 80 divisors (see below), whose sum is σ = 6298096896. Its totient is φ = 534624000.

The previous prime is 2018241829. The next prime is 2018241857. The reversal of 2018241840 is 481428102.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2018241798 and 2018241807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8395 + ... + 64085.

Almost surely, 2^2018241840 is an apocalyptic number.

2018241840 is a gapful number since it is divisible by the number (20) 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 2018241840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3149048448).

2018241840 is an abundant number, since it is smaller than the sum of its proper divisors (4279855056).

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

2018241840 is a wasteful number, since it uses less digits than its factorization.

2018241840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55858 (or 55852 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 2018241840 is about 44924.8465773674. The cubic root of 2018241840 is about 1263.7400088828.

Adding to 2018241840 its reverse (481428102), we get a palindrome (2499669942).

The spelling of 2018241840 in words is "two billion, eighteen million, two hundred forty-one thousand, eight hundred forty".