2281686290 has 16 divisors (see below), whose sum is σ = 4422961368. Its totient is φ = 842468736.

The previous prime is 2281686259. The next prime is 2281686301. The reversal of 2281686290 is 926861822.

It is a Cunningham number, because it is equal to 47767²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 821452921 + 1460233369 = 28661^2 + 38213^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8775587 + ... + 8775846.

Almost surely, 2^2281686290 is an apocalyptic number.

2281686290 is a deficient number, since it is larger than the sum of its proper divisors (2141275078).

2281686290 is a wasteful number, since it uses less digits than its factorization.

2281686290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17551453.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 2281686290 is about 47767.0000104675. Note that the first 4 decimals coincide. The cubic root of 2281686290 is about 1316.4932729703.

The spelling of 2281686290 in words is "two billion, two hundred eighty-one million, six hundred eighty-six thousand, two hundred ninety".