2491840000 has 200 divisors, whose sum is σ = 6711289200. Its totient is φ = 918528000.

The previous prime is 2491839979. The next prime is 2491840007. The reversal of 2491840000 is 481942.

It is a tau number, because it is divible by the number of its divisors (200).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491840007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4159701 + ... + 4160299.

It is an arithmetic number, because the mean of its divisors is an integer number (33556446).

Almost surely, 2^2491840000 is an apocalyptic number.

2491840000 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 2491840000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3355644600).

2491840000 is an abundant number, since it is smaller than the sum of its proper divisors (4219449200).

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

2491840000 is an frugal number, since it uses more digits than its factorization.

2491840000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2491840000 is about 49918.3333055101. Note that the first 4 decimals coincide. The cubic root of 2491840000 is about 1355.7305556066.

The spelling of 2491840000 in words is "two billion, four hundred ninety-one million, eight hundred forty thousand".