1445941315729 has 3 divisors (see below), whose sum is σ = 1445942518203. Its totient is φ = 1445940113256.

The previous prime is 1445941315669. The next prime is 1445941315769. The reversal of 1445941315729 is 9275131495441.

The square root of 1445941315729 is 1202473.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 1307146323025 + 138794992704 = 1143305^2 + 372552^2 .

It is not a de Polignac number, because 1445941315729 - 2⁷ = 1445941315601 is a prime.

It is a super-3 number, since 3×1445941315729³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445941315729.

It is not an unprimeable number, because it can be changed into a prime (1445941315769) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 601237 + ... + 1803709.

It is an arithmetic number, because the mean of its divisors is an integer number (481980839401).

Almost surely, 2^{1445941315729} is an apocalyptic number.

1445941315729 is the 1202473-rd square number.

1445941315729 is the 601237-th centered octagonal number.

It is an amenable number.

1445941315729 is a deficient number, since it is larger than the sum of its proper divisors (1202474).

1445941315729 is an frugal number, since it uses more digits than its factorization.

1445941315729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2404946 (or 1202473 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 55.

The spelling of 1445941315729 in words is "one trillion, four hundred forty-five billion, nine hundred forty-one million, three hundred fifteen thousand, seven hundred twenty-nine".