1440143573 has 36 divisors (see below), whose sum is σ = 1670739084. Its totient is φ = 1239638400.

The previous prime is 1440143561. The next prime is 1440143603. The reversal of 1440143573 is 3753410441.

It can be written as a sum of positive squares in 2 ways, for example, as 215003569 + 1225140004 = 14663^2 + 35002^2 .

It is not a de Polignac number, because 1440143573 - 2¹⁰ = 1440142549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440143503) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9172811 + ... + 9172967.

It is an arithmetic number, because the mean of its divisors is an integer number (46409419).

Almost surely, 2^1440143573 is an apocalyptic number.

It is an amenable number.

1440143573 is a deficient number, since it is larger than the sum of its proper divisors (230595511).

1440143573 is a wasteful number, since it uses less digits than its factorization.

1440143573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1440143573 is about 37949.2236152467. The cubic root of 1440143573 is about 1129.2807632338.

The spelling of 1440143573 in words is "one billion, four hundred forty million, one hundred forty-three thousand, five hundred seventy-three".