1445251144 has 16 divisors (see below), whose sum is σ = 2714363820. Its totient is φ = 721420800.

The previous prime is 1445251111. The next prime is 1445251177. The reversal of 1445251144 is 4411525441.

It is an interprime number because it is at equal distance from previous prime (1445251111) and next prime (1445251177).

It can be written as a sum of positive squares in 2 ways, for example, as 1051704900 + 393546244 = 32430^2 + 19838^2 .

It is an unprimeable number.

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, 145489 + ... + 155104.

Almost surely, 2^1445251144 is an apocalyptic number.

It is an amenable number.

1445251144 is a deficient number, since it is larger than the sum of its proper divisors (1269112676).

1445251144 is a wasteful number, since it uses less digits than its factorization.

1445251144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301200 (or 301196 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 1445251144 is about 38016.4588566584. The cubic root of 1445251144 is about 1130.6142127721.

Adding to 1445251144 its reverse (4411525441), we get a palindrome (5856776585).

The spelling of 1445251144 in words is "one billion, four hundred forty-five million, two hundred fifty-one thousand, one hundred forty-four".