1445185456 has 80 divisors (see below), whose sum is σ = 3307788288. Its totient is φ = 603014400.

The previous prime is 1445185447. The next prime is 1445185477. The reversal of 1445185456 is 6545815441.

It is a super-2 number, since 2×1445185456² = 4177122004467855872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 435355 + ... + 438661.

Almost surely, 2^1445185456 is an apocalyptic number.

1445185456 is a gapful number since it is divisible by the number (16) 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 1445185456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1653894144).

1445185456 is an abundant number, since it is smaller than the sum of its proper divisors (1862602832).

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

1445185456 is a wasteful number, since it uses less digits than its factorization.

1445185456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530 (or 3524 counting only the distinct ones).

The product of its digits is 384000, while the sum is 43.

The square root of 1445185456 is about 38015.5949052491. The cubic root of 1445185456 is about 1130.5970833590.

The spelling of 1445185456 in words is "one billion, four hundred forty-five million, one hundred eighty-five thousand, four hundred fifty-six".