1445346173 has 2 divisors, whose sum is σ = 1445346174. Its totient is φ = 1445346172.

The previous prime is 1445346121. The next prime is 1445346181. The reversal of 1445346173 is 3716435441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919423684 + 525922489 = 30322^2 + 22933^2 .

It is an emirp because it is prime and its reverse (3716435441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445346173 - 2¹² = 1445342077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1445346113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722673086 + 722673087.

It is an arithmetic number, because the mean of its divisors is an integer number (722673087).

Almost surely, 2^1445346173 is an apocalyptic number.

It is an amenable number.

1445346173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445346173 is an equidigital number, since it uses as much as digits as its factorization.

1445346173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 38.

The square root of 1445346173 is about 38017.7086763524. The cubic root of 1445346173 is about 1130.6389924983.

The spelling of 1445346173 in words is "one billion, four hundred forty-five million, three hundred forty-six thousand, one hundred seventy-three".