2855169389 has 2 divisors, whose sum is σ = 2855169390. Its totient is φ = 2855169388.

The previous prime is 2855169353. The next prime is 2855169391. The reversal of 2855169389 is 9839615582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2392188100 + 462981289 = 48910^2 + 21517^2 .

It is a cyclic number.

It is not a de Polignac number, because 2855169389 - 2⁸ = 2855169133 is a prime.

Together with 2855169391, 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 (2855169319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427584694 + 1427584695.

It is an arithmetic number, because the mean of its divisors is an integer number (1427584695).

Almost surely, 2^2855169389 is an apocalyptic number.

It is an amenable number.

2855169389 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855169389 is an equidigital number, since it uses as much as digits as its factorization.

2855169389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4665600, while the sum is 56.

The square root of 2855169389 is about 53433.7850895854. The cubic root of 2855169389 is about 1418.6566328900.

The spelling of 2855169389 in words is "two billion, eight hundred fifty-five million, one hundred sixty-nine thousand, three hundred eighty-nine".