4245145169 has 2 divisors, whose sum is σ = 4245145170. Its totient is φ = 4245145168.

The previous prime is 4245145159. The next prime is 4245145189. The reversal of 4245145169 is 9615415424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2546716225 + 1698428944 = 50465^2 + 41212^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245145169 - 2⁴ = 4245145153 is a prime.

It is a super-2 number, since 2×4245145169² = 36042515011768077122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (4245145159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122572584 + 2122572585.

It is an arithmetic number, because the mean of its divisors is an integer number (2122572585).

Almost surely, 2^4245145169 is an apocalyptic number.

It is an amenable number.

4245145169 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245145169 is an equidigital number, since it uses as much as digits as its factorization.

4245145169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 4245145169 is about 65154.7785584450. The cubic root of 4245145169 is about 1619.1888904316.

The spelling of 4245145169 in words is "four billion, two hundred forty-five million, one hundred forty-five thousand, one hundred sixty-nine".