2128440583 has 4 divisors (see below), whose sum is σ = 2142536368. Its totient is φ = 2114344800.

The previous prime is 2128440581. The next prime is 2128440619. The reversal of 2128440583 is 3850448212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2128440583 - 2¹ = 2128440581 is a prime.

It is a super-3 number, since 3×2128440583³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2128440581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7047666 + ... + 7047967.

It is an arithmetic number, because the mean of its divisors is an integer number (535634092).

Almost surely, 2^2128440583 is an apocalyptic number.

2128440583 is a deficient number, since it is larger than the sum of its proper divisors (14095785).

2128440583 is a wasteful number, since it uses less digits than its factorization.

2128440583 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14095784.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 2128440583 is about 46135.0255554281. The cubic root of 2128440583 is about 1286.3342806199.

Adding to 2128440583 its reverse (3850448212), we get a palindrome (5978888795).

The spelling of 2128440583 in words is "two billion, one hundred twenty-eight million, four hundred forty thousand, five hundred eighty-three".