1443021113 has 4 divisors (see below), whose sum is σ = 1444188900. Its totient is φ = 1441853328.

The previous prime is 1443021109. The next prime is 1443021157. The reversal of 1443021113 is 3111203441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 395333689 + 1047687424 = 19883^2 + 32368^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443021113 - 2² = 1443021109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1443021913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 582038 + ... + 584511.

It is an arithmetic number, because the mean of its divisors is an integer number (361047225).

Almost surely, 2^1443021113 is an apocalyptic number.

It is an amenable number.

1443021113 is a deficient number, since it is larger than the sum of its proper divisors (1167787).

1443021113 is a wasteful number, since it uses less digits than its factorization.

1443021113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1167786.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1443021113 is about 37987.1177243023. The cubic root of 1443021113 is about 1130.0323986325.

Adding to 1443021113 its reverse (3111203441), we get a palindrome (4554224554).

The spelling of 1443021113 in words is "one billion, four hundred forty-three million, twenty-one thousand, one hundred thirteen".