2281609 has 8 divisors (see below), whose sum is σ = 2550240. Its totient is φ = 2023200.

The previous prime is 2281607. The next prime is 2281619. The reversal of 2281609 is 9061822.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2281609 - 2¹ = 2281607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2281607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2079 + ... + 2980.

It is an arithmetic number, because the mean of its divisors is an integer number (318780).

2^2281609 is an apocalyptic number.

It is an amenable number.

2281609 is a deficient number, since it is larger than the sum of its proper divisors (268631).

2281609 is a wasteful number, since it uses less digits than its factorization.

2281609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5111.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2281609 is about 1510.4995862297. The cubic root of 2281609 is about 131.6478407808.

The spelling of 2281609 in words is "two million, two hundred eighty-one thousand, six hundred nine".