2026868509 has 2 divisors, whose sum is σ = 2026868510. Its totient is φ = 2026868508.

The previous prime is 2026868489. The next prime is 2026868539. The reversal of 2026868509 is 9058686202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1693075609 + 333792900 = 41147^2 + 18270^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026868509 - 2¹¹ = 2026866461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2026868539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013434254 + 1013434255.

It is an arithmetic number, because the mean of its divisors is an integer number (1013434255).

Almost surely, 2^2026868509 is an apocalyptic number.

It is an amenable number.

2026868509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026868509 is an equidigital number, since it uses as much as digits as its factorization.

2026868509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 2026868509 is about 45020.7564241206. The cubic root of 2026868509 is about 1265.5380046317.

The spelling of 2026868509 in words is "two billion, twenty-six million, eight hundred sixty-eight thousand, five hundred nine".