1445968319 has 4 divisors (see below), whose sum is σ = 1446138000. Its totient is φ = 1445798640.

The previous prime is 1445968297. The next prime is 1445968351. The reversal of 1445968319 is 9138695441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1445968319 is a prime.

It is a super-2 number, since 2×1445968319² = 4181648759103371522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445968379) 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, 71342 + ... + 89339.

It is an arithmetic number, because the mean of its divisors is an integer number (361534500).

Almost surely, 2^1445968319 is an apocalyptic number.

1445968319 is a deficient number, since it is larger than the sum of its proper divisors (169681).

1445968319 is an equidigital number, since it uses as much as digits as its factorization.

1445968319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169680.

The product of its digits is 933120, while the sum is 50.

The square root of 1445968319 is about 38025.8901144996. The cubic root of 1445968319 is about 1130.8011962285.

The spelling of 1445968319 in words is "one billion, four hundred forty-five million, nine hundred sixty-eight thousand, three hundred nineteen".