1345189 has 4 divisors (see below), whose sum is σ = 1347724. Its totient is φ = 1342656.

The previous prime is 1345177. The next prime is 1345207. The reversal of 1345189 is 9815431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9815431 = 107 ⋅91733.

It can be written as a sum of positive squares in 2 ways, for example, as 756900 + 588289 = 870^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345189 - 2¹³ = 1336997 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 1345189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1345129) 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, 132 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (336931).

2^1345189 is an apocalyptic number.

It is an amenable number.

1345189 is a deficient number, since it is larger than the sum of its proper divisors (2535).

1345189 is an equidigital number, since it uses as much as digits as its factorization.

1345189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534.

The product of its digits is 4320, while the sum is 31.

The square root of 1345189 is about 1159.8228312980. The cubic root of 1345189 is about 110.3895007256.

The spelling of 1345189 in words is "one million, three hundred forty-five thousand, one hundred eighty-nine".