1445744273 has 2 divisors, whose sum is σ = 1445744274. Its totient is φ = 1445744272.

The previous prime is 1445744269. The next prime is 1445744383. The reversal of 1445744273 is 3724475441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005080209 + 440664064 = 31703^2 + 20992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445744273 - 2² = 1445744269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445744273.

It is not a weakly prime, because it can be changed into another prime (1445744203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722872136 + 722872137.

It is an arithmetic number, because the mean of its divisors is an integer number (722872137).

Almost surely, 2^1445744273 is an apocalyptic number.

It is an amenable number.

1445744273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445744273 is an equidigital number, since it uses as much as digits as its factorization.

1445744273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 376320, while the sum is 41.

The square root of 1445744273 is about 38022.9440338330. The cubic root of 1445744273 is about 1130.7427891003.

The spelling of 1445744273 in words is "one billion, four hundred forty-five million, seven hundred forty-four thousand, two hundred seventy-three".