2006023789 has 18 divisors (see below), whose sum is σ = 2564970702. Its totient is φ = 1563130800.

The previous prime is 2006023787. The next prime is 2006023793. The reversal of 2006023789 is 9873206002.

It can be written as a sum of positive squares in only one way, i.e., 1360355689 + 645668100 = 36883^2 + 25410^2 .

It is not a de Polignac number, because 2006023789 - 2¹ = 2006023787 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006023787) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 163242 + ... + 175099.

Almost surely, 2^2006023789 is an apocalyptic number.

It is an amenable number.

2006023789 is a deficient number, since it is larger than the sum of its proper divisors (558946913).

2006023789 is a wasteful number, since it uses less digits than its factorization.

2006023789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338377 (or 338359 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 2006023789 is about 44788.6569233774. The cubic root of 2006023789 is about 1261.1846985108.

The spelling of 2006023789 in words is "two billion, six million, twenty-three thousand, seven hundred eighty-nine".