1443143173 has 2 divisors, whose sum is σ = 1443143174. Its totient is φ = 1443143172.

The previous prime is 1443143159. The next prime is 1443143179. The reversal of 1443143173 is 3713413441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1084911844 + 358231329 = 32938^2 + 18927^2 .

It is an emirp because it is prime and its reverse (3713413441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1443143173 - 2¹⁷ = 1443012101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1443143179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721571586 + 721571587.

It is an arithmetic number, because the mean of its divisors is an integer number (721571587).

Almost surely, 2^1443143173 is an apocalyptic number.

It is an amenable number.

1443143173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443143173 is an equidigital number, since it uses as much as digits as its factorization.

1443143173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 31.

The square root of 1443143173 is about 37988.7242876093. The cubic root of 1443143173 is about 1130.0642595352.

The spelling of 1443143173 in words is "one billion, four hundred forty-three million, one hundred forty-three thousand, one hundred seventy-three".