1444405146 has 16 divisors (see below), whose sum is σ = 2988424800. Its totient is φ = 464865968.

The previous prime is 1444405139. The next prime is 1444405189. The reversal of 1444405146 is 6415044441.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4150416 + ... + 4150763.

It is an arithmetic number, because the mean of its divisors is an integer number (186776550).

Almost surely, 2^1444405146 is an apocalyptic number.

1444405146 is an abundant number, since it is smaller than the sum of its proper divisors (1544019654).

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

1444405146 is a wasteful number, since it uses less digits than its factorization.

1444405146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8301213.

The product of its (nonzero) digits is 30720, while the sum is 33.

The square root of 1444405146 is about 38005.3304945504. The cubic root of 1444405146 is about 1130.3935627578.

Adding to 1444405146 its reverse (6415044441), we get a palindrome (7859449587).

The spelling of 1444405146 in words is "one billion, four hundred forty-four million, four hundred five thousand, one hundred forty-six".