4245145189 has 2 divisors, whose sum is σ = 4245145190. Its totient is φ = 4245145188.

The previous prime is 4245145169. The next prime is 4245145199. The reversal of 4245145189 is 9815415424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2387104164 + 1858041025 = 48858^2 + 43105^2 .

It is a cyclic number.

It is not a de Polignac number, because 4245145189 - 2⁷ = 4245145061 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2122572594 + 2122572595.

It is an arithmetic number, because the mean of its divisors is an integer number (2122572595).

Almost surely, 2^4245145189 is an apocalyptic number.

It is an amenable number.

4245145189 is a deficient number, since it is larger than the sum of its proper divisors (1).

4245145189 is an equidigital number, since it uses as much as digits as its factorization.

4245145189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 230400, while the sum is 43.

The square root of 4245145189 is about 65154.7787119257. The cubic root of 4245145189 is about 1619.1888929744.

The spelling of 4245145189 in words is "four billion, two hundred forty-five million, one hundred forty-five thousand, one hundred eighty-nine".