1443004013 has 12 divisors (see below), whose sum is σ = 1679414940. Its totient is φ = 1234654080.

The previous prime is 1443004009. The next prime is 1443004037. The reversal of 1443004013 is 3104003441.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 532594084 + 910409929 = 23078^2 + 30173^2 .

It is not a de Polignac number, because 1443004013 - 2² = 1443004009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1443009013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 348698 + ... + 352811.

It is an arithmetic number, because the mean of its divisors is an integer number (139951245).

Almost surely, 2^1443004013 is an apocalyptic number.

It is an amenable number.

1443004013 is a deficient number, since it is larger than the sum of its proper divisors (236410927).

1443004013 is a wasteful number, since it uses less digits than its factorization.

1443004013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701548 (or 701537 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1443004013 is about 37986.8926473330. The cubic root of 1443004013 is about 1130.0279349348.

Adding to 1443004013 its reverse (3104003441), we get a palindrome (4547007454).

The spelling of 1443004013 in words is "one billion, four hundred forty-three million, four thousand, thirteen".