2265943680 has 1024 divisors, whose sum is σ = 10857369600. Its totient is φ = 431308800.

The previous prime is 2265943661. The next prime is 2265943697. The reversal of 2265943680 is 863495622.

2265943680 is a `hidden beast` number, since 2 + 26 + 594 + 36 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17297215 + ... + 17297345.

It is an arithmetic number, because the mean of its divisors is an integer number (10602900).

Almost surely, 2^2265943680 is an apocalyptic number.

2265943680 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 2265943680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5428684800).

2265943680 is an abundant number, since it is smaller than the sum of its proper divisors (8591425920).

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

2265943680 is a wasteful number, since it uses less digits than its factorization.

2265943680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 2265943680 is about 47601.9293726630. The cubic root of 2265943680 is about 1313.4585454986.

The spelling of 2265943680 in words is "two billion, two hundred sixty-five million, nine hundred forty-three thousand, six hundred eighty".