145244369 has 2 divisors, whose sum is σ = 145244370. Its totient is φ = 145244368.

The previous prime is 145244339. The next prime is 145244389. The reversal of 145244369 is 963442541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 143520400 + 1723969 = 11980^2 + 1313^2 .

It is an emirp because it is prime and its reverse (963442541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145244369 - 2²⁴ = 128467153 is a prime.

It is a super-2 number, since 2×145244369² = 42191853452416322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145244339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72622184 + 72622185.

It is an arithmetic number, because the mean of its divisors is an integer number (72622185).

Almost surely, 2^145244369 is an apocalyptic number.

It is an amenable number.

145244369 is a deficient number, since it is larger than the sum of its proper divisors (1).

145244369 is an equidigital number, since it uses as much as digits as its factorization.

145244369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 145244369 is about 12051.7371776852. The cubic root of 145244369 is about 525.6537512686.

The spelling of 145244369 in words is "one hundred forty-five million, two hundred forty-four thousand, three hundred sixty-nine".