2129788589 has 4 divisors (see below), whose sum is σ = 2130238656. Its totient is φ = 2129338524.

The previous prime is 2129788553. The next prime is 2129788607. The reversal of 2129788589 is 9858879212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2129788589 - 2²⁸ = 1861353133 is a prime.

It is a super-2 number, since 2×2129788589² = 9071998867669221842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129788189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217859 + ... + 227424.

It is an arithmetic number, because the mean of its divisors is an integer number (532559664).

Almost surely, 2^2129788589 is an apocalyptic number.

It is an amenable number.

2129788589 is a deficient number, since it is larger than the sum of its proper divisors (450067).

2129788589 is an equidigital number, since it uses as much as digits as its factorization.

2129788589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450066.

The product of its digits is 5806080, while the sum is 59.

The square root of 2129788589 is about 46149.6325987542. The cubic root of 2129788589 is about 1286.6057814875.

The spelling of 2129788589 in words is "two billion, one hundred twenty-nine million, seven hundred eighty-eight thousand, five hundred eighty-nine".