2026569989 has 2 divisors, whose sum is σ = 2026569990. Its totient is φ = 2026569988.

The previous prime is 2026569977. The next prime is 2026569991. The reversal of 2026569989 is 9899656202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1026113089 + 1000456900 = 32033^2 + 31630^2 .

It is a cyclic number.

It is not a de Polignac number, because 2026569989 - 2¹⁶ = 2026504453 is a prime.

Together with 2026569991, 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 (2026569959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1013284994 + 1013284995.

It is an arithmetic number, because the mean of its divisors is an integer number (1013284995).

Almost surely, 2^2026569989 is an apocalyptic number.

It is an amenable number.

2026569989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2026569989 is an equidigital number, since it uses as much as digits as its factorization.

2026569989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 56.

The square root of 2026569989 is about 45017.4409423725. The cubic root of 2026569989 is about 1265.4758715182.

The spelling of 2026569989 in words is "two billion, twenty-six million, five hundred sixty-nine thousand, nine hundred eighty-nine".