5445138689 has 2 divisors, whose sum is σ = 5445138690. Its totient is φ = 5445138688.

The previous prime is 5445138679. The next prime is 5445138739. The reversal of 5445138689 is 9868315445.

5445138689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3597600400 + 1847538289 = 59980^2 + 42983^2 .

It is a cyclic number.

It is not a de Polignac number, because 5445138689 - 2²⁴ = 5428361473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5445138689.

It is not a weakly prime, because it can be changed into another prime (5445138679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2722569344 + 2722569345.

It is an arithmetic number, because the mean of its divisors is an integer number (2722569345).

Almost surely, 2^5445138689 is an apocalyptic number.

It is an amenable number.

5445138689 is a deficient number, since it is larger than the sum of its proper divisors (1).

5445138689 is an equidigital number, since it uses as much as digits as its factorization.

5445138689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 53.

The square root of 5445138689 is about 73791.1830031204. The cubic root of 5445138689 is about 1759.2854676337.

The spelling of 5445138689 in words is "five billion, four hundred forty-five million, one hundred thirty-eight thousand, six hundred eighty-nine".