1445728571886 has 8 divisors (see below), whose sum is σ = 2891457143784. Its totient is φ = 481909523960.

The previous prime is 1445728571863. The next prime is 1445728571891. The reversal of 1445728571886 is 6881758275441.

It is a sphenic number, since it is the product of 3 distinct primes.

1445728571886 is an admirable number.

It is a super-3 number, since 3×1445728571886³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120477380985 + ... + 120477380996.

It is an arithmetic number, because the mean of its divisors is an integer number (361432142973).

Almost surely, 2^{1445728571886} is an apocalyptic number.

1445728571886 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1445728571886 is a wasteful number, since it uses less digits than its factorization.

1445728571886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240954761986.

The product of its digits is 120422400, while the sum is 66.

The spelling of 1445728571886 in words is "one trillion, four hundred forty-five billion, seven hundred twenty-eight million, five hundred seventy-one thousand, eight hundred eighty-six".