2006861789 has 8 divisors (see below), whose sum is σ = 2078431488. Its totient is φ = 1936495120.

The previous prime is 2006861777. The next prime is 2006861821. The reversal of 2006861789 is 9871686002.

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 2006861789 - 2²⁰ = 2005813213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2006861749) 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, 297362 + ... + 304035.

It is an arithmetic number, because the mean of its divisors is an integer number (259803936).

Almost surely, 2^2006861789 is an apocalyptic number.

It is an amenable number.

2006861789 is a deficient number, since it is larger than the sum of its proper divisors (71569699).

2006861789 is an equidigital number, since it uses as much as digits as its factorization.

2006861789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601515.

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 2006861789 is about 44798.0109937930. The cubic root of 2006861789 is about 1261.3602905868.

The spelling of 2006861789 in words is "two billion, six million, eight hundred sixty-one thousand, seven hundred eighty-nine".