1444157873 has 2 divisors, whose sum is σ = 1444157874. Its totient is φ = 1444157872.

The previous prime is 1444157857. The next prime is 1444157917. The reversal of 1444157873 is 3787514441.

It is an a-pointer prime, because the next prime (1444157917) can be obtained adding 1444157873 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 963978304 + 480179569 = 31048^2 + 21913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444157873 - 2⁴ = 1444157857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1444153873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722078936 + 722078937.

It is an arithmetic number, because the mean of its divisors is an integer number (722078937).

Almost surely, 2^1444157873 is an apocalyptic number.

It is an amenable number.

1444157873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444157873 is an equidigital number, since it uses as much as digits as its factorization.

1444157873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 44.

The square root of 1444157873 is about 38002.0772195416. The cubic root of 1444157873 is about 1130.3290536736.

The spelling of 1444157873 in words is "one billion, four hundred forty-four million, one hundred fifty-seven thousand, eight hundred seventy-three".