1443226513 has 2 divisors, whose sum is σ = 1443226514. Its totient is φ = 1443226512.

The previous prime is 1443226507. The next prime is 1443226523. The reversal of 1443226513 is 3156223441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109689344 + 333537169 = 33312^2 + 18263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1443226513 is a prime.

It is a super-2 number, since 2×1443226513² = 4165805535652278338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1443226523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721613256 + 721613257.

It is an arithmetic number, because the mean of its divisors is an integer number (721613257).

Almost surely, 2^1443226513 is an apocalyptic number.

It is an amenable number.

1443226513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443226513 is an equidigital number, since it uses as much as digits as its factorization.

1443226513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 31.

The square root of 1443226513 is about 37989.8211762046. The cubic root of 1443226513 is about 1130.0860124572.

Adding to 1443226513 its reverse (3156223441), we get a palindrome (4599449954).

The spelling of 1443226513 in words is "one billion, four hundred forty-three million, two hundred twenty-six thousand, five hundred thirteen".