1445575169 has 2 divisors, whose sum is σ = 1445575170. Its totient is φ = 1445575168.

The previous prime is 1445575147. The next prime is 1445575177. The reversal of 1445575169 is 9615755441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1437395569 + 8179600 = 37913^2 + 2860^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445575169 - 2²⁸ = 1177139713 is a prime.

It is a super-2 number, since 2×1445575169² = 4179375138458757122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1445565169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722787584 + 722787585.

It is an arithmetic number, because the mean of its divisors is an integer number (722787585).

Almost surely, 2^1445575169 is an apocalyptic number.

It is an amenable number.

1445575169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445575169 is an equidigital number, since it uses as much as digits as its factorization.

1445575169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756000, while the sum is 47.

The square root of 1445575169 is about 38020.7202588273. The cubic root of 1445575169 is about 1130.6987009472.

The spelling of 1445575169 in words is "one billion, four hundred forty-five million, five hundred seventy-five thousand, one hundred sixty-nine".