2281661607289 has 9 divisors (see below), whose sum is σ = 2309609618373. Its totient is φ = 2254047846012.

The previous prime is 2281661607287. The next prime is 2281661607301. The reversal of 2281661607289 is 9827061661822.

The square root of 2281661607289 is 1510517.

It is a perfect power (a square), and thus also a powerful number.

2281661607289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2281661607289 - 2¹ = 2281661607287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2281661607287) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 125363812 + ... + 125382010.

Almost surely, 2^{2281661607289} is an apocalyptic number.

2281661607289 is the 1510517-th square number.

2281661607289 is the 755259-th centered octagonal number.

It is an amenable number.

2281661607289 is a deficient number, since it is larger than the sum of its proper divisors (27948011084).

2281661607289 is an frugal number, since it uses more digits than its factorization.

2281661607289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36564 (or 18282 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 58.

The spelling of 2281661607289 in words is "two trillion, two hundred eighty-one billion, six hundred sixty-one million, six hundred seven thousand, two hundred eighty-nine".