1445328345 has 32 divisors (see below), whose sum is σ = 2390805504.
Its totient is φ = 744825600.
The previous prime is 1445328343. The next prime is 1445328383. The reversal of 1445328345 is 5438235441.
It is not a de Polignac number, because 1445328345 - 21 = 1445328343 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1445328343) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357435 + ... + 361455.
It is an arithmetic number, because the mean of its divisors is an integer number (74712672).
Almost surely, 21445328345 is an apocalyptic number.
1445328345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
1445328345 is a deficient number, since it is larger than the sum of its proper divisors (945477159).
1445328345 is a wasteful number, since it uses less digits than its factorization.
1445328345 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4833.
The product of its digits is 230400, while the sum is 39.
The square root of 1445328345 is about 38017.4742059490.
The cubic root of 1445328345 is about 1130.6343437585.
The spelling of 1445328345 in words is "one billion, four hundred forty-five million, three hundred twenty-eight thousand, three hundred forty-five".