2281130388 has 36 divisors (see below), whose sum is σ = 5874991668. Its totient is φ = 746029440.

The previous prime is 2281130339. The next prime is 2281130389. The reversal of 2281130388 is 8830311822.

It can be written as a sum of positive squares in 2 ways, for example, as 1595842704 + 685287684 = 39948^2 + 26178^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281130389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 595873 + ... + 599688.

It is an arithmetic number, because the mean of its divisors is an integer number (163194213).

Almost surely, 2^2281130388 is an apocalyptic number.

It is an amenable number.

2281130388 is an abundant number, since it is smaller than the sum of its proper divisors (3593861280).

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

2281130388 is a wasteful number, since it uses less digits than its factorization.

2281130388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195624 (or 1195619 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 2281130388 is about 47761.1807642985. The cubic root of 2281130388 is about 1316.3863490271.

The spelling of 2281130388 in words is "two billion, two hundred eighty-one million, one hundred thirty thousand, three hundred eighty-eight".