1445678189 has 8 divisors (see below), whose sum is σ = 1480548960. Its totient is φ = 1410864336.

The previous prime is 1445678167. The next prime is 1445678197. The reversal of 1445678189 is 9818765441.

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 1445678189 - 2¹² = 1445674093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445678189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445678089) 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, 39602 + ... + 66780.

It is an arithmetic number, because the mean of its divisors is an integer number (185068620).

Almost surely, 2^1445678189 is an apocalyptic number.

It is an amenable number.

1445678189 is a deficient number, since it is larger than the sum of its proper divisors (34870771).

1445678189 is a wasteful number, since it uses less digits than its factorization.

1445678189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28459.

The product of its digits is 1935360, while the sum is 53.

The square root of 1445678189 is about 38022.0750222815. The cubic root of 1445678189 is about 1130.7255603399.

The spelling of 1445678189 in words is "one billion, four hundred forty-five million, six hundred seventy-eight thousand, one hundred eighty-nine".