2491594560 has 448 divisors, whose sum is σ = 10821619200. Its totient is φ = 525533184.

The previous prime is 2491594519. The next prime is 2491594561. The reversal of 2491594560 is 654951942.

2491594560 is a `hidden beast` number, since 2 + 4 + 9 + 1 + 594 + 56 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (448).

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 (2491594561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 784656 + ... + 787824.

It is an arithmetic number, because the mean of its divisors is an integer number (24155400).

Almost surely, 2^2491594560 is an apocalyptic number.

2491594560 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 2491594560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5410809600).

2491594560 is an abundant number, since it is smaller than the sum of its proper divisors (8330024640).

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

2491594560 is a wasteful number, since it uses less digits than its factorization.

2491594560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215 (or 3199 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2491594560 is about 49915.8748295570. The cubic root of 2491594560 is about 1355.6860421235.

The spelling of 2491594560 in words is "two billion, four hundred ninety-one million, five hundred ninety-four thousand, five hundred sixty".