2145430219 has 2 divisors, whose sum is σ = 2145430220. Its totient is φ = 2145430218.

The previous prime is 2145430211. The next prime is 2145430241. The reversal of 2145430219 is 9120345412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2145430219 - 2³ = 2145430211 is a prime.

It is a super-2 number, since 2×2145430219² = 9205741649196775922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2145430211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1072715109 + 1072715110.

It is an arithmetic number, because the mean of its divisors is an integer number (1072715110).

Almost surely, 2^2145430219 is an apocalyptic number.

2145430219 is a deficient number, since it is larger than the sum of its proper divisors (1).

2145430219 is an equidigital number, since it uses as much as digits as its factorization.

2145430219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2145430219 is about 46318.7890493696. The cubic root of 2145430219 is about 1289.7478061970.

The spelling of 2145430219 in words is "two billion, one hundred forty-five million, four hundred thirty thousand, two hundred nineteen".