1445627144 has 16 divisors (see below), whose sum is σ = 2919055020. Its totient is φ = 667212480.

The previous prime is 1445627137. The next prime is 1445627149. The reversal of 1445627144 is 4417265441.

It can be written as a sum of positive squares in 2 ways, for example, as 1431714244 + 13912900 = 37838^2 + 3730^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1445627098 and 1445627107.

It is not an unprimeable number, because it can be changed into a prime (1445627149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6950027 + ... + 6950234.

Almost surely, 2^1445627144 is an apocalyptic number.

It is an amenable number.

1445627144 is an abundant number, since it is smaller than the sum of its proper divisors (1473427876).

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

1445627144 is a wasteful number, since it uses less digits than its factorization.

1445627144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13900280 (or 13900276 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 1445627144 is about 38021.4037615657. The cubic root of 1445627144 is about 1130.7122520379.

The spelling of 1445627144 in words is "one billion, four hundred forty-five million, six hundred twenty-seven thousand, one hundred forty-four".