2591440992 has 192 divisors, whose sum is σ = 8719603200. Its totient is φ = 733432320.

The previous prime is 2591440991. The next prime is 2591441009. The reversal of 2591440992 is 2990441952.

Added to its reverse (2990441952) it gives a square (5581882944 = 74712²).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591440991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657267 + ... + 661197.

It is an arithmetic number, because the mean of its divisors is an integer number (45414600).

Almost surely, 2^2591440992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2591440992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4359801600).

2591440992 is an abundant number, since it is smaller than the sum of its proper divisors (6128162208).

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

2591440992 is a wasteful number, since it uses less digits than its factorization.

2591440992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 4052 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 2591440992 is about 50906.1979723491. The cubic root of 2591440992 is about 1373.5583332821.

Adding to 2591440992 its reverse (2990441952), we get a square (5581882944 = 74712²).

The spelling of 2591440992 in words is "two billion, five hundred ninety-one million, four hundred forty thousand, nine hundred ninety-two".