1444445556 has 24 divisors (see below), whose sum is σ = 3371676000. Its totient is φ = 481295712.

The previous prime is 1444445533. The next prime is 1444445557. The reversal of 1444445556 is 6555444441.

It is a happy number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444445557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11095 + ... + 54881.

It is an arithmetic number, because the mean of its divisors is an integer number (140486500).

Almost surely, 2^1444445556 is an apocalyptic number.

It is an amenable number.

1444445556 is an abundant number, since it is smaller than the sum of its proper divisors (1927230444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444445556 is a wasteful number, since it uses less digits than its factorization.

1444445556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46543 (or 46541 counting only the distinct ones).

The product of its digits is 768000, while the sum is 42.

The square root of 1444445556 is about 38005.8621267825. The cubic root of 1444445556 is about 1130.4041043011.

Adding to 1444445556 its reverse (6555444441), we get a palindrome (7999889997).

The spelling of 1444445556 in words is "one billion, four hundred forty-four million, four hundred forty-five thousand, five hundred fifty-six".