1443111141 has 4 divisors (see below), whose sum is σ = 1924148192. Its totient is φ = 962074092.

The previous prime is 1443111121. The next prime is 1443111143. The reversal of 1443111141 is 1411113441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1443111141 - 2¹⁰ = 1443110117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443111143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240518521 + ... + 240518526.

It is an arithmetic number, because the mean of its divisors is an integer number (481037048).

Almost surely, 2^1443111141 is an apocalyptic number.

It is an amenable number.

1443111141 is a deficient number, since it is larger than the sum of its proper divisors (481037051).

1443111141 is an equidigital number, since it uses as much as digits as its factorization.

1443111141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481037050.

The product of its digits is 192, while the sum is 21.

The square root of 1443111141 is about 37988.3026864850. The cubic root of 1443111141 is about 1130.0558985061.

Adding to 1443111141 its reverse (1411113441), we get a palindrome (2854224582).

The spelling of 1443111141 in words is "one billion, four hundred forty-three million, one hundred eleven thousand, one hundred forty-one".