1445043165 has 16 divisors (see below), whose sum is σ = 2365839168. Its totient is φ = 752766336.

The previous prime is 1445043139. The next prime is 1445043181. The reversal of 1445043165 is 5613405441.

It is not a de Polignac number, because 1445043165 - 2⁶ = 1445043101 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119544 + ... + 1120833.

It is an arithmetic number, because the mean of its divisors is an integer number (147864948).

Almost surely, 2^1445043165 is an apocalyptic number.

1445043165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1445043165 is a deficient number, since it is larger than the sum of its proper divisors (920796003).

1445043165 is a wasteful number, since it uses less digits than its factorization.

1445043165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240428.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1445043165 is about 38013.7233772226. The cubic root of 1445043165 is about 1130.5599764559.

The spelling of 1445043165 in words is "one billion, four hundred forty-five million, forty-three thousand, one hundred sixty-five".