1444430143 has 16 divisors (see below), whose sum is σ = 1654170336. Its totient is φ = 1249459200.

The previous prime is 1444430131. The next prime is 1444430167. The reversal of 1444430143 is 3410344441.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1444430143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444730143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37468 + ... + 65518.

It is an arithmetic number, because the mean of its divisors is an integer number (103385646).

Almost surely, 2^1444430143 is an apocalyptic number.

1444430143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1444430143 is a deficient number, since it is larger than the sum of its proper divisors (209740193).

1444430143 is a wasteful number, since it uses less digits than its factorization.

1444430143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28314.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 1444430143 is about 38005.6593548908. The cubic root of 1444430143 is about 1130.4000836164.

Adding to 1444430143 its reverse (3410344441), we get a palindrome (4854774584).

The spelling of 1444430143 in words is "one billion, four hundred forty-four million, four hundred thirty thousand, one hundred forty-three".