1443445121 has 2 divisors, whose sum is σ = 1443445122. Its totient is φ = 1443445120.

The previous prime is 1443445079. The next prime is 1443445141. The reversal of 1443445121 is 1215443441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1192666225 + 250778896 = 34535^2 + 15836^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443445121 - 2¹⁸ = 1443182977 is a prime.

It is a super-4 number, since 4×1443445121⁴ (a number of 38 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1443445141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721722560 + 721722561.

It is an arithmetic number, because the mean of its divisors is an integer number (721722561).

Almost surely, 2^1443445121 is an apocalyptic number.

It is an amenable number.

1443445121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443445121 is an equidigital number, since it uses as much as digits as its factorization.

1443445121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7680, while the sum is 29.

The square root of 1443445121 is about 37992.6982590076. The cubic root of 1443445121 is about 1130.1430682666.

Adding to 1443445121 its reverse (1215443441), we get a palindrome (2658888562).

The spelling of 1443445121 in words is "one billion, four hundred forty-three million, four hundred forty-five thousand, one hundred twenty-one".