1445508797 has 4 divisors (see below), whose sum is σ = 1445704860. Its totient is φ = 1445312736.

The previous prime is 1445508787. The next prime is 1445508821. The reversal of 1445508797 is 7978055441.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7978055441 = 631 ⋅12643511.

It can be written as a sum of positive squares in 2 ways, for example, as 1231939801 + 213568996 = 35099^2 + 14614^2 .

It is a cyclic number.

It is not a de Polignac number, because 1445508797 - 2⁴ = 1445508781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445508707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86522 + ... + 101867.

It is an arithmetic number, because the mean of its divisors is an integer number (361426215).

Almost surely, 2^1445508797 is an apocalyptic number.

It is an amenable number.

1445508797 is a deficient number, since it is larger than the sum of its proper divisors (196063).

1445508797 is an equidigital number, since it uses as much as digits as its factorization.

1445508797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196062.

The product of its (nonzero) digits is 1411200, while the sum is 50.

The square root of 1445508797 is about 38019.8474089521. The cubic root of 1445508797 is about 1130.6813957517.

The spelling of 1445508797 in words is "one billion, four hundred forty-five million, five hundred eight thousand, seven hundred ninety-seven".