1443316081 has 3 divisors (see below), whose sum is σ = 1443354073. Its totient is φ = 1443278090.

The previous prime is 1443315977. The next prime is 1443316097. The reversal of 1443316081 is 1806133441.

The square root of 1443316081 is 37991.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1806133441 = 7 ⋅258019063.

It is not a de Polignac number, because 1443316081 - 2¹⁹ = 1442791793 is a prime.

It is a super-2 number, since 2×1443316081² = 4166322619346397122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443316981) 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 in 2 ways as a sum of consecutive naturals, for example, 18996 + ... + 56986.

Almost surely, 2^1443316081 is an apocalyptic number.

1443316081 is the 37991-st square number.

1443316081 is the 18996-th centered octagonal number.

It is an amenable number.

1443316081 is a deficient number, since it is larger than the sum of its proper divisors (37992).

1443316081 is an frugal number, since it uses more digits than its factorization.

1443316081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75982 (or 37991 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The cubic root of 1443316081 is about 1130.1093900419.

The spelling of 1443316081 in words is "one billion, four hundred forty-three million, three hundred sixteen thousand, eighty-one".