1445388980 has 24 divisors (see below), whose sum is σ = 3468933888. Its totient is φ = 495561888.

The previous prime is 1445388911. The next prime is 1445388991. The reversal of 1445388980 is 898835441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5161964 + ... + 5162243.

It is an arithmetic number, because the mean of its divisors is an integer number (144538912).

Almost surely, 2^1445388980 is an apocalyptic number.

1445388980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1445388980 is an abundant number, since it is smaller than the sum of its proper divisors (2023544908).

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

1445388980 is a wasteful number, since it uses less digits than its factorization.

1445388980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10324223 (or 10324221 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 50.

The square root of 1445388980 is about 38018.2716598217. The cubic root of 1445388980 is about 1130.6501544807.

The spelling of 1445388980 in words is "one billion, four hundred forty-five million, three hundred eighty-eight thousand, nine hundred eighty".