5378128169 has 2 divisors, whose sum is σ = 5378128170. Its totient is φ = 5378128168.

The previous prime is 5378128117. The next prime is 5378128187. The reversal of 5378128169 is 9618218735.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5182128169 + 196000000 = 71987^2 + 14000^2 .

It is a cyclic number.

It is not a de Polignac number, because 5378128169 - 2²⁰ = 5377079593 is a prime.

It is a super-2 number, since 2×5378128169² = 57848525204382585122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5378121169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2689064084 + 2689064085.

It is an arithmetic number, because the mean of its divisors is an integer number (2689064085).

Almost surely, 2^5378128169 is an apocalyptic number.

It is an amenable number.

5378128169 is a deficient number, since it is larger than the sum of its proper divisors (1).

5378128169 is an equidigital number, since it uses as much as digits as its factorization.

5378128169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 5378128169 is about 73335.7223254806. The cubic root of 5378128169 is about 1752.0387851038.

The spelling of 5378128169 in words is "five billion, three hundred seventy-eight million, one hundred twenty-eight thousand, one hundred sixty-nine".