545385389 has 2 divisors, whose sum is σ = 545385390. Its totient is φ = 545385388.

The previous prime is 545385377. The next prime is 545385413. The reversal of 545385389 is 983583545.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 337016164 + 208369225 = 18358^2 + 14435^2 .

It is a cyclic number.

It is not a de Polignac number, because 545385389 - 2²⁴ = 528608173 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (545385319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 272692694 + 272692695.

It is an arithmetic number, because the mean of its divisors is an integer number (272692695).

Almost surely, 2^545385389 is an apocalyptic number.

It is an amenable number.

545385389 is a deficient number, since it is larger than the sum of its proper divisors (1).

545385389 is an equidigital number, since it uses as much as digits as its factorization.

545385389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592000, while the sum is 50.

The square root of 545385389 is about 23353.4877266759. The cubic root of 545385389 is about 817.0234084541.

The spelling of 545385389 in words is "five hundred forty-five million, three hundred eighty-five thousand, three hundred eighty-nine".