1445457269 has 2 divisors, whose sum is σ = 1445457270. Its totient is φ = 1445457268.

The previous prime is 1445457259. The next prime is 1445457323. The reversal of 1445457269 is 9627545441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1152602500 + 292854769 = 33950^2 + 17113^2 .

It is an emirp because it is prime and its reverse (9627545441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445457269 - 2⁴ = 1445457253 is a prime.

It is a super-2 number, since 2×1445457269² = 4178693433009876722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445457259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722728634 + 722728635.

It is an arithmetic number, because the mean of its divisors is an integer number (722728635).

Almost surely, 2^1445457269 is an apocalyptic number.

It is an amenable number.

1445457269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445457269 is an equidigital number, since it uses as much as digits as its factorization.

1445457269 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1209600, while the sum is 47.

The square root of 1445457269 is about 38019.1697568477. The cubic root of 1445457269 is about 1130.6679604724.

The spelling of 1445457269 in words is "one billion, four hundred forty-five million, four hundred fifty-seven thousand, two hundred sixty-nine".