1445503873 has 12 divisors (see below), whose sum is σ = 1593619300. Its totient is φ = 1310158080.

The previous prime is 1445503859. The next prime is 1445503889. The reversal of 1445503873 is 3783055441.

It can be written as a sum of positive squares in 2 ways, for example, as 447449409 + 998054464 = 21153^2 + 31592^2 .

It is not a de Polignac number, because 1445503873 - 2⁹ = 1445503361 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445503273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23053 + ... + 58501.

Almost surely, 2^1445503873 is an apocalyptic number.

It is an amenable number.

1445503873 is a deficient number, since it is larger than the sum of its proper divisors (148115427).

1445503873 is a wasteful number, since it uses less digits than its factorization.

1445503873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35808 (or 35797 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 1445503873 is about 38019.7826532451. The cubic root of 1445503873 is about 1130.6801118943.

The spelling of 1445503873 in words is "one billion, four hundred forty-five million, five hundred three thousand, eight hundred seventy-three".