1445250389 has 4 divisors (see below), whose sum is σ = 1576636800. Its totient is φ = 1313863980.

The previous prime is 1445250361. The next prime is 1445250397. The reversal of 1445250389 is 9830525441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9830525441 = 11 ⋅893684131.

It is not a de Polignac number, because 1445250389 - 2⁸ = 1445250133 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 (1445250089) 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, 65693189 + ... + 65693210.

It is an arithmetic number, because the mean of its divisors is an integer number (394159200).

Almost surely, 2^1445250389 is an apocalyptic number.

It is an amenable number.

1445250389 is a deficient number, since it is larger than the sum of its proper divisors (131386411).

1445250389 is a wasteful number, since it uses less digits than its factorization.

1445250389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131386410.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 1445250389 is about 38016.4489267475. The cubic root of 1445250389 is about 1130.6140158942.

The spelling of 1445250389 in words is "one billion, four hundred forty-five million, two hundred fifty thousand, three hundred eighty-nine".