2281782709 has 4 divisors (see below), whose sum is σ = 2282615500. Its totient is φ = 2280949920.

The previous prime is 2281782707. The next prime is 2281782739. The reversal of 2281782709 is 9072871822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1127482084 + 1154300625 = 33578^2 + 33975^2 .

It is a cyclic number.

It is not a de Polignac number, because 2281782709 - 2¹ = 2281782707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281782707) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 412272 + ... + 417769.

It is an arithmetic number, because the mean of its divisors is an integer number (570653875).

Almost surely, 2^2281782709 is an apocalyptic number.

It is an amenable number.

2281782709 is a deficient number, since it is larger than the sum of its proper divisors (832791).

2281782709 is an equidigital number, since it uses as much as digits as its factorization.

2281782709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832790.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 2281782709 is about 47768.0092635228. The cubic root of 2281782709 is about 1316.5118167373.

The spelling of 2281782709 in words is "two billion, two hundred eighty-one million, seven hundred eighty-two thousand, seven hundred nine".