1445221148 has 24 divisors (see below), whose sum is σ = 2990114400. Its totient is φ = 598022208.

The previous prime is 1445221097. The next prime is 1445221157. The reversal of 1445221148 is 8411225441.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 889103 + ... + 890726.

It is an arithmetic number, because the mean of its divisors is an integer number (124588100).

Almost surely, 2^1445221148 is an apocalyptic number.

It is an amenable number.

1445221148 is an abundant number, since it is smaller than the sum of its proper divisors (1544893252).

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

1445221148 is a wasteful number, since it uses less digits than its factorization.

1445221148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779869 (or 1779867 counting only the distinct ones).

The product of its digits is 10240, while the sum is 32.

The square root of 1445221148 is about 38016.0643412755. The cubic root of 1445221148 is about 1130.6063908008.

Adding to 1445221148 its reverse (8411225441), we get a palindrome (9856446589).

The spelling of 1445221148 in words is "one billion, four hundred forty-five million, two hundred twenty-one thousand, one hundred forty-eight".