145237219 has 2 divisors, whose sum is σ = 145237220. Its totient is φ = 145237218.

The previous prime is 145237217. The next prime is 145237229. The reversal of 145237219 is 912732541.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145237219 - 2¹ = 145237217 is a prime.

It is a super-2 number, since 2×145237219² = 42187699565707922, which contains 22 as substring.

Together with 145237217, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145237217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72618609 + 72618610.

It is an arithmetic number, because the mean of its divisors is an integer number (72618610).

Almost surely, 2^145237219 is an apocalyptic number.

145237219 is a deficient number, since it is larger than the sum of its proper divisors (1).

145237219 is an equidigital number, since it uses as much as digits as its factorization.

145237219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 34.

The square root of 145237219 is about 12051.4405363010. The cubic root of 145237219 is about 525.6451256077.

It can be divided in two parts, 14523721 and 9, that multiplied together give a square (130713489 = 11433²).

The spelling of 145237219 in words is "one hundred forty-five million, two hundred thirty-seven thousand, two hundred nineteen".