1445445678 has 8 divisors (see below), whose sum is σ = 2890891368. Its totient is φ = 481815224.

The previous prime is 1445445671. The next prime is 1445445697. The reversal of 1445445678 is 8765445441.

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

1445445678 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445445671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120453801 + ... + 120453812.

It is an arithmetic number, because the mean of its divisors is an integer number (361361421).

Almost surely, 2^1445445678 is an apocalyptic number.

1445445678 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.

1445445678 is a wasteful number, since it uses less digits than its factorization.

1445445678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240907618.

The product of its digits is 2150400, while the sum is 48.

The square root of 1445445678 is about 38019.0173202833. The cubic root of 1445445678 is about 1130.6649382206.

The spelling of 1445445678 in words is "one billion, four hundred forty-five million, four hundred forty-five thousand, six hundred seventy-eight".