1382028209 has 16 divisors (see below), whose sum is σ = 1528616448. Its totient is φ = 1242819072.

The previous prime is 1382028187. The next prime is 1382028233. The reversal of 1382028209 is 9028202831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1382028209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1382028239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580229 + ... + 582605.

It is an arithmetic number, because the mean of its divisors is an integer number (95538528).

Almost surely, 2^1382028209 is an apocalyptic number.

It is an amenable number.

1382028209 is a deficient number, since it is larger than the sum of its proper divisors (146588239).

1382028209 is a wasteful number, since it uses less digits than its factorization.

1382028209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3904.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1382028209 is about 37175.6399944910. The cubic root of 1382028209 is about 1113.8814441594.

The spelling of 1382028209 in words is "one billion, three hundred eighty-two million, twenty-eight thousand, two hundred nine".