2106458789 has 2 divisors, whose sum is σ = 2106458790. Its totient is φ = 2106458788.

The previous prime is 2106458719. The next prime is 2106458791. The reversal of 2106458789 is 9878546012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1998984100 + 107474689 = 44710^2 + 10367^2 .

It is a cyclic number.

It is not a de Polignac number, because 2106458789 - 2²⁸ = 1838023333 is a prime.

Together with 2106458791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2106458719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053229394 + 1053229395.

It is an arithmetic number, because the mean of its divisors is an integer number (1053229395).

Almost surely, 2^2106458789 is an apocalyptic number.

It is an amenable number.

2106458789 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106458789 is an equidigital number, since it uses as much as digits as its factorization.

2106458789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 2106458789 is about 45896.1740126560. The cubic root of 2106458789 is about 1281.8906769916.

The spelling of 2106458789 in words is "two billion, one hundred six million, four hundred fifty-eight thousand, seven hundred eighty-nine".