2491699200 has 156 divisors (see below), whose sum is σ = 8239228608. Its totient is φ = 664371200.

The previous prime is 2491699193. The next prime is 2491699201. The reversal of 2491699200 is 29961942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491699201) 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, 303145 + ... + 311255.

It is an arithmetic number, because the mean of its divisors is an integer number (52815568).

Almost surely, 2^2491699200 is an apocalyptic number.

2491699200 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 2491699200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4119614304).

2491699200 is an abundant number, since it is smaller than the sum of its proper divisors (5747529408).

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

2491699200 is an equidigital number, since it uses as much as digits as its factorization.

2491699200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8148 (or 8121 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 2491699200 is about 49916.9229820910. The cubic root of 2491699200 is about 1355.7050201980.

The spelling of 2491699200 in words is "two billion, four hundred ninety-one million, six hundred ninety-nine thousand, two hundred".