1445532503809 has 3 divisors (see below), whose sum is σ = 1445533706113. Its totient is φ = 1445531301506.

The previous prime is 1445532503719. The next prime is 1445532503879. The reversal of 1445532503809 is 9083052355441.

The square root of 1445532503809 is 1202303.

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 is not a de Polignac number, because 1445532503809 - 2²⁹ = 1444995632897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445532503879) 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, 601152 + ... + 1803454.

Almost surely, 2^{1445532503809} is an apocalyptic number.

1445532503809 is the 1202303-rd square number.

1445532503809 is the 601152-nd centered octagonal number.

It is an amenable number.

1445532503809 is a deficient number, since it is larger than the sum of its proper divisors (1202304).

1445532503809 is an frugal number, since it uses more digits than its factorization.

1445532503809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404606 (or 1202303 counting only the distinct ones).

The product of its (nonzero) digits is 2592000, while the sum is 49.

Multiplying 1445532503809 by its sum of digits (49), we get a square (70831092686641 = 8416121²).

The spelling of 1445532503809 in words is "one trillion, four hundred forty-five billion, five hundred thirty-two million, five hundred three thousand, eight hundred nine".