1445248816 has 20 divisors (see below), whose sum is σ = 3054730824. Its totient is φ = 656931200.

The previous prime is 1445248789. The next prime is 1445248867. The reversal of 1445248816 is 6188425441.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4105645 + ... + 4105996.

Almost surely, 2^1445248816 is an apocalyptic number.

1445248816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1445248816 is an abundant number, since it is smaller than the sum of its proper divisors (1609482008).

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

1445248816 is a wasteful number, since it uses less digits than its factorization.

1445248816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8211660 (or 8211654 counting only the distinct ones).

The product of its digits is 245760, while the sum is 43.

The square root of 1445248816 is about 38016.4282383288. The cubic root of 1445248816 is about 1130.6136057100.

The spelling of 1445248816 in words is "one billion, four hundred forty-five million, two hundred forty-eight thousand, eight hundred sixteen".