1445155565 has 8 divisors (see below), whose sum is σ = 1981927680. Its totient is φ = 990963792.

The previous prime is 1445155559. The next prime is 1445155609. The reversal of 1445155565 is 5655515441.

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

It is not a de Polignac number, because 1445155565 - 2⁶ = 1445155501 is a prime.

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, 20645045 + ... + 20645114.

It is an arithmetic number, because the mean of its divisors is an integer number (247740960).

Almost surely, 2^1445155565 is an apocalyptic number.

It is an amenable number.

1445155565 is a deficient number, since it is larger than the sum of its proper divisors (536772115).

1445155565 is an equidigital number, since it uses as much as digits as its factorization.

1445155565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41290171.

The product of its digits is 300000, while the sum is 41.

The square root of 1445155565 is about 38015.2017619268. The cubic root of 1445155565 is about 1130.5892885323.

The spelling of 1445155565 in words is "one billion, four hundred forty-five million, one hundred fifty-five thousand, five hundred sixty-five".