2018747840 has 112 divisors (see below), whose sum is σ = 4932822240. Its totient is φ = 786677760.

The previous prime is 2018747839. The next prime is 2018747851. The reversal of 2018747840 is 487478102.

It is a happy number.

It is a congruent number.

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, 2078555 + ... + 2079525.

Almost surely, 2^2018747840 is an apocalyptic number.

2018747840 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 2018747840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2466411120).

2018747840 is an abundant number, since it is smaller than the sum of its proper divisors (2914074400).

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

2018747840 is an equidigital number, since it uses as much as digits as its factorization.

2018747840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1140 counting only the distinct ones).

The product of its (nonzero) digits is 100352, while the sum is 41.

The square root of 2018747840 is about 44930.4778518991. The cubic root of 2018747840 is about 1263.8456121855.

The spelling of 2018747840 in words is "two billion, eighteen million, seven hundred forty-seven thousand, eight hundred forty".