1445674189 has 2 divisors, whose sum is σ = 1445674190. Its totient is φ = 1445674188.

The previous prime is 1445674187. The next prime is 1445674193. The reversal of 1445674189 is 9814765441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1395022500 + 50651689 = 37350^2 + 7117^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445674189 - 2¹ = 1445674187 is a prime.

Together with 1445674187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445674183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722837094 + 722837095.

It is an arithmetic number, because the mean of its divisors is an integer number (722837095).

Almost surely, 2^1445674189 is an apocalyptic number.

It is an amenable number.

1445674189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445674189 is an equidigital number, since it uses as much as digits as its factorization.

1445674189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 49.

The square root of 1445674189 is about 38022.0224212232. The cubic root of 1445674189 is about 1130.7245174830.

The spelling of 1445674189 in words is "one billion, four hundred forty-five million, six hundred seventy-four thousand, one hundred eighty-nine".