It is an unprimeable number.
Almost surely, 21445906540 is an apocalyptic number.
1445906540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 1445906540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1655441424).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1445906540 is a wasteful number, since it uses less digits than its factorization.
1445906540 is an odious number, because the sum of its binary digits is odd.
The square root of 1445906540 is about 38025.0777776982. The cubic root of 1445906540 is about 1130.7850915045.
The spelling of 1445906540 in words is "one billion, four hundred forty-five million, nine hundred six thousand, five hundred forty".