145618219 has 2 divisors, whose sum is σ = 145618220. Its totient is φ = 145618218.

The previous prime is 145618217. The next prime is 145618229. The reversal of 145618219 is 912816541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145618219 - 2¹ = 145618217 is a prime.

It is a super-2 number, since 2×145618219² = 42409331409463922, which contains 22 as substring.

Together with 145618217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145618211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72809109 + 72809110.

It is an arithmetic number, because the mean of its divisors is an integer number (72809110).

Almost surely, 2^145618219 is an apocalyptic number.

145618219 is a deficient number, since it is larger than the sum of its proper divisors (1).

145618219 is an equidigital number, since it uses as much as digits as its factorization.

145618219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 145618219 is about 12067.2374220449. The cubic root of 145618219 is about 526.1043649265.

The spelling of 145618219 in words is "one hundred forty-five million, six hundred eighteen thousand, two hundred nineteen".