1445442145 has 8 divisors (see below), whose sum is σ = 1982320704. Its totient is φ = 991160304.

The previous prime is 1445442139. The next prime is 1445442149. The reversal of 1445442145 is 5412445441.

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

It is a cyclic number.

It is not a de Polignac number, because 1445442145 - 2³ = 1445442137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1445442145.

It is not an unprimeable number, because it can be changed into a prime (1445442149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20649139 + ... + 20649208.

It is an arithmetic number, because the mean of its divisors is an integer number (247790088).

Almost surely, 2^1445442145 is an apocalyptic number.

It is an amenable number.

1445442145 is a deficient number, since it is larger than the sum of its proper divisors (536878559).

1445442145 is an equidigital number, since it uses as much as digits as its factorization.

1445442145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41298359.

The product of its digits is 51200, while the sum is 34.

The square root of 1445442145 is about 38018.9708566658. The cubic root of 1445442145 is about 1130.6640170186.

Adding to 1445442145 its reverse (5412445441), we get a palindrome (6857887586).

It can be divided in two parts, 144544 and 2145, that added together give a square (146689 = 383²).

The spelling of 1445442145 in words is "one billion, four hundred forty-five million, four hundred forty-two thousand, one hundred forty-five".