2281841661 has 32 divisors (see below), whose sum is σ = 3495840768. Its totient is φ = 1310397440.

The previous prime is 2281841641. The next prime is 2281841687. The reversal of 2281841661 is 1661481822.

It is not a de Polignac number, because 2281841661 - 2²² = 2277647357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2281841641) 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 31 ways as a sum of consecutive naturals, for example, 67165 + ... + 95261.

It is an arithmetic number, because the mean of its divisors is an integer number (109245024).

Almost surely, 2^2281841661 is an apocalyptic number.

It is an amenable number.

2281841661 is a deficient number, since it is larger than the sum of its proper divisors (1213999107).

2281841661 is a wasteful number, since it uses less digits than its factorization.

2281841661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28241.

The product of its digits is 36864, while the sum is 39.

The square root of 2281841661 is about 47768.6263252357. The cubic root of 2281841661 is about 1316.5231544129.

The spelling of 2281841661 in words is "two billion, two hundred eighty-one million, eight hundred forty-one thousand, six hundred sixty-one".