1073928209 has 2 divisors, whose sum is σ = 1073928210. Its totient is φ = 1073928208.

The previous prime is 1073928197. The next prime is 1073928217. The reversal of 1073928209 is 9028293701.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 994771600 + 79156609 = 31540^2 + 8897^2 .

It is a cyclic number.

It is not a de Polignac number, because 1073928209 - 2¹² = 1073924113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1073928299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536964104 + 536964105.

It is an arithmetic number, because the mean of its divisors is an integer number (536964105).

Almost surely, 2^1073928209 is an apocalyptic number.

It is an amenable number.

1073928209 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073928209 is an equidigital number, since it uses as much as digits as its factorization.

1073928209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 1073928209 is about 32770.8438859911. The cubic root of 1073928209 is about 1024.0592467678.

The spelling of 1073928209 in words is "one billion, seventy-three million, nine hundred twenty-eight thousand, two hundred nine".